About Los Alamos County
Los Alamos County, New Mexico, is one of the smallest and most unique counties in the United States, including approximately 109 square miles in north-central New Mexico. Los Alamos County Seat is Los Alamos, which serves as both Los Alamos County Seat and the primary county. With a population of approximately 19,400 residents as of recent estimates, Los Alamos County stands out for its exceptional concentration of scientific talent and its key role in American history.
- Los Alamos County sits atop the Pajarito Plateau at elevations ranging from 6,000 to 7,800 feet, offering stunning views of the Jemez Mountains and the Rio Grande Valley.
Los Alamos County was created in 1949 from portions of Sandoval and Santa Fe counties, making it New Mexico's youngest county. The local community is famously home to Los Alamos area National Laboratory (LANL), birthplace of the atomic bomb during the Manhattan Project and continuing as a premier nuclear research facility. Major landmarks include Bandelier National Monument, which preserves ancient Puebloan cliff dwellings, and the Bradbury Science Museum, showcasing nuclear science history.
Los Alamos County Clerk's Office is located at 1000 Central Avenue, Suite 240, Los Alamos, NM 87544. Los Alamos County Assessor's Office, responsible for property valuations, operates from the same building complex. Los Alamos County Clerk maintains land records and documents.
What makes Los Alamos County truly distinctive is its extraordinarily high educational attainment - over 60% of residents hold graduate degrees - and median household income consistently ranking among the highest in New Mexico, largely due to employment at the national laboratory and related scientific enterprises. Los Alamos County operates under a consolidated city-county government structure, streamlining many administrative functions.
Sheriff, Police & Law Enforcement
Sheriff & Law Enforcement
Los Alamos County Sheriff's Office is responsible for law enforcement in the unincorporated areas of Los Alamos County. This office handles a variety of duties including serving legal documents, maintaining the sex offender registry, and providing security for the courts.
Police Departments
The primary law enforcement agency in Los Alamos County is the Los Alamos Police Department, which serves the incorporated areas of Los Alamos County, including the town of Los Alamos. The department handles a wide range of duties, from traffic enforcement to investigating major crimes. These agencies coordinate closely on law enforcement activities, making sure of full coverage and response to incidents throughout Los Alamos County.
Law Enforcement & Arrests
Law enforcement in Los Alamos County is provided primarily by the Los Alamos Police Department, which serves the incorporated county of Los Alamos County and functions as the principal law enforcement agency for Los Alamos County. The department's website at www.losalamosnm.us/police provides access to community information and crime prevention resources.
- Arrest records and booking information can be requested through the Police Department's Records Division during business hours.
- The department typically responds to requests within three business days, though complex requests may take longer.
- Mugshot and booking photo availability varies; these may be obtained through formal public records requests, though not all booking photos are routinely published online.
- Citizens seeking information about recent arrests should contact the Police Department directly or submit written requests under the Inspection of Public Records Act.
Unlike most New Mexico counties, Los Alamos County does not have a traditional elected Sheriff's Office due to its consolidated city-county government structure, making Los Alamos County Police Department the primary law enforcement authority. Los Alamos County Detention Center, a small holding facility, is managed by the Police Department for short-term detention, while longer-term inmates are typically housed at facilities in neighboring counties through intergovernmental agreements. Inmate information can be obtained by calling the main police number for To request arrest records, police reports, or incident reports, citizens must submit a public records request under the New Mexico Inspection of Public Records Act (NMSA 1978, §§ 14-2-1 to 14-2-12).
Los Alamos County sits adjacent to several Pueblo tribal lands, including San Ildefonso Pueblo, which maintains its own tribal police force with jurisdiction on tribal lands. The New Mexico State Police also maintain jurisdiction throughout Los Alamos County for state highway enforcement and can assist local police when needed.
Criminal, Arrest & Jail Records
Criminal Records
Criminal records in Los Alamos County cover felony, misdemeanor, traffic offenses, and the sex offender registry. To conduct a background check, individuals can request information from these local agencies or use the New Mexico Department of Public Safety's services. The New Mexico State Police provides additional resources for residents seeking full background checks, which include statewide criminal history information.
Arrest Records
Arrest records in Los Alamos County are maintained by the Los Alamos Police Department. These records include details of the arrest, charges, and personal information of the arrested individual. Residents and attorneys can request arrest records by contacting the police department directly, often requiring a formal request under the New Mexico Inspection of Public Records Act. Arrest records typically include the date and location of the arrest, charges filed, and any court dates. The process ensures transparency while protecting sensitive information as mandated by state law.
Jail & Inmate Records
Los Alamos County does not operate its own detention facility. Instead, individuals arrested in Los Alamos County are typically held at nearby facilities in neighboring counties. The booking process involves transporting the arrested individuals to a regional detention center where they undergo standard procedures including fingerprinting and photographing. Inmate information and visitation rules are managed by the facility where the individual is held.
- Bail and bond processes follow New Mexico state laws, where a judge sets the bail amount during a hearing.
Mugshots & Booking Photos
Mugshots in Los Alamos County are taken and retained by the Los Alamos Police Department during the booking process. These booking photos are part of the arrest record and can be accessed through formal requests to the police department. While the department itself may not provide an online search tool for mugshots, third-party websites may offer access to these images. New Mexico does not have specific laws for the removal of mugshots from public records, but individuals can petition for removal in certain circumstances, such as expungement of the arrest record.
Courts & Case Records
Los Alamos County is served by the First Judicial District Court of New Mexico, which has jurisdiction over Los Alamos, Rio Arriba, and Santa Fe counties. Los Alamos County courthouse is located at 2300 Trinity Drive, Building 2, Los Alamos County, NM 87544, and the court can be contacted through the office’s website. The First Judicial District Court handles civil cases exceeding $10,000, criminal felonies, domestic relations matters, probate cases, and appeals from lower courts.
- Court records and case information can be searched through the New Mexico Courts website at www.nmcourts.gov, which provides public access to case dockets, judgments, and filing information.
- Court documents can be requested in person at the courthouse, by mail, or in some cases electronically.
- The First Judicial District maintains a document filing system accessible to registered attorneys and parties.
The online case lookup system allows searches by party name, case number, or attorney. Los Alamos County also has a Magistrate Court, located at 2300 Trinity Drive, Los Alamos, NM 87544, phone, which handles misdemeanor criminal cases, civil matters up to $10,000, traffic violations, and preliminary hearings for felonies. The Los Alamos area Municipal Court handles ordinance violations and certain traffic matters within city limits.
Access to court records in New Mexico is governed by Rule 1-079 NMRA (Access to Court Records) and the New Mexico Inspection of Public Records Act (NMSA 1978, §§ 14-2-1 to 14-2-12). While basic case information is available online at no charge through the state courts website, certified copies of court documents require a formal request and payment of fees, typically $2.00 per page for copies plus $6.00 for certification. Most civil and criminal case filings are public record, with exceptions for sealed cases, juvenile matters, certain mental health proceedings, and cases involving protected personal information.
The New Mexico Compilation Commission publishes court rules governing access at www.nmcompcomm.us.
Property & Public Records
Property and land records for Los Alamos County are maintained by Los Alamos County Clerk's Office, which serves the recording function at 1000 Central Avenue, Suite 240, Los Alamos, NM 87544 Los Alamos County Clerk records and maintains documents including warranty deeds, quitclaim deeds, mortgages, deeds of trust, satisfaction of mortgages, liens (mechanic's, judgment, tax), easements, right-of-way agreements, plat maps, subdivision documents, and Uniform Commercial Code (UCC) filings.
- Research fees and copy fees apply: typically $1.00 per page for uncertified copies and $2.00 per page for certified copies, plus a certification fee.
- Recording fees for new documents vary by document type and number of pages.
These records are public and searchable under the New Mexico Inspection of Public Records Act (NMSA 1978, §§ 14-2-1 to 14-2-12). Los Alamos County Clerk's office provides online access to recorded documents through a web-based search portal, though some counties in New Mexico contract with third-party vendors for document imaging and search services. Property tax records and assessment information are maintained separately by Los Alamos County Assessor's Office at 1000 Central Avenue, Los Alamos, NM 87544
The Assessor maintains property valuations, ownership information, legal descriptions, and assessment history. Los Alamos County provides an online GIS (Geographic Information System) property search tool accessible through Los Alamos County website at www.losalamosnm.us, allowing users to search by owner name, parcel number, or address to view maps, assessment values, and basic ownership data. Property tax payment information is handled by the County Treasurer's Office, which can be contacted for To obtain certified copies of recorded documents, requesters must visit the County Clerk's office in person or submit a written request with payment.
Los Alamos County Clerk's office hours are Monday through Friday, 8:00 AM to 5:00 PM, excluding county holidays.
Vital Records
Vital records for Los Alamos County, New Mexico, including birth certificates, death certificates, marriage licenses, and marriage certificates, are maintained by Los Alamos County Clerk's Office at 1000 Central Avenue, Suite 240, Los Alamos, NM 87544 Birth and death certificates occurring in Los Alamos County can be requested from the County Clerk, though the New Mexico Department of Health, Vital Records and Health Statistics Bureau, is the central repository for all vital records statewide and is located at 1105 St. Francis Drive, Santa Fe, NM 87502
- Birth certificates cost $10.00 for the first copy and $5.00 for each additional copy ordered at the same time; death certificates cost the same.
- Processing time for in-person requests is typically immediate if the record is on file locally; mail requests take approximately two to four weeks.
- Online ordering is available through the state's vendor VitalChek at www.vitalchek.com, with additional convenience fees.
- Requesters must provide valid government-issued photo identification such as a driver's license or passport, and proof of relationship if applicable.
- The marriage license fee is $25.00, and there is no waiting period or blood test requirement in New Mexico.
Eligibility to obtain certified copies is restricted under New Mexico law (NMSA 1978, § 24-14-25) to the registrant (if of age), immediate family members, legal representatives, or persons with a direct and tangible interest. Marriage licenses are issued by Los Alamos County Clerk's Office; couples must apply in person, and both parties must present valid identification. Marriage licenses are valid for one year from the date of issuance.
Divorce decrees and dissolution records are court records maintained by the First Judicial District Court, not the County Clerk. To request certified copies of vital records by mail, send a completed application form (available at www.nmhealth.org), copy of valid ID, applicable fees, and a self-addressed stamped envelope to the County Clerk or the state Vital Records office.
Business & Licensing
Business and licensing records in Los Alamos County are accessible through multiple agencies depending on the type of record. Local business registrations, including fictitious business names (Doing Business As or DBA) and certain trade name filings, are recorded with Los Alamos County Clerk's Office at 1000 Central Avenue, Suite 240, Los Alamos, NM 87544
- Permit records, inspection reports, and zoning information are public records accessible by request.
- The Los Alamos area Chamber of Commerce, located at 109 Central Park Square, Los Alamos, NM 87544, provides business directories and networking resources at www.losalamoschamber.com.
For full business entity searches, including corporations, limited liability companies (LLCs), limited partnerships, and nonprofit organizations, the New Mexico Secretary of State maintains the official state business registry accessible online at www.sos.state.nm.us. The Secretary of State's Corporations Bureau provides a free searchable database where users can look up business entities by name, registered agent, or filing number, and view entity status, formation date, principal office address, and registered agent information. Annual reports and officer/director information may also be available.
Professional and occupational licenses in New Mexico are regulated by various state boards and commissions; information is available through the New Mexico Regulation and Licensing Department at www.rld.state.nm.us. Sales tax permits and gross receipts tax identification numbers are issued by the New Mexico Taxation and Revenue Department and can be verified through their website at www.tax.newmexico.gov. Building permits, zoning approvals, and land use permits in Los Alamos County are handled by Los Alamos County Development Services Department, located at 1000 Central Avenue, Los Alamos, NM 87544
Los Alamos County Commerce and Development Corporation (LACDC) is the economic development organization for Los Alamos County and can be reached at www.losalamosdevelopment.com. Business owners seeking to verify contractor licenses should check the New Mexico Construction Industries Division at www.rld.state.nm.us/construction-industries.
Elections & Voter Records
Elections in Los Alamos County are administered by Los Alamos County Clerk's Office, which is the County Clerk and official election authority, located at 1000 Central Avenue, Suite 240, Los Alamos, NM 87544 Los Alamos County Clerk's election division can be reached during business hours for voter registration questions, polling location information, and absentee ballot requests.
- Absentee ballot requests must be submitted by the Thursday before Election Day, though earlier requests are encouraged.
Voter registration in New Mexico can be completed online at the New Mexico Secretary of State portal at www.nmvote.org, in person at the County Clerk's office, by mail using a voter registration form, or at various state agencies. The voter registration deadline in New Mexico is 28 days before any election for regular registration; however, New Mexico offers same-day voter registration during early voting and on Election Day at voting convenience centers, allowing eligible residents to register and vote simultaneously with proper identification. Voters can verify their registration status and find their polling location by visiting the New Mexico Voter View portal at https://voterview.sos.state.nm.us or by contacting the County Clerk.
Los Alamos County uses a voting convenience center model during early voting and on Election Day, meaning registered voters can cast ballots at any open location in Los Alamos County rather than being assigned to a specific precinct polling place. Election records that are public include voter registration lists (with certain personal information redacted), campaign finance reports filed with the Secretary of State, candidate declarations and petitions, precinct-level election results, and canvass reports. Los Alamos County Clerk publishes unofficial election results on election night and certified results following the official canvass.
Los Alamos County consistently demonstrates high voter turnout compared to state and national averages; in the 2024 general election, Los Alamos County recorded approximately 72% turnout among registered voters, reflecting high civic engagement in this well-educated community. The next major election is scheduled for November 3, 2026, featuring U.S. House of Representatives races, one U.S.
Senate seat (if up for election in New Mexico's cycle), New Mexico state legislative races, and county positions including County Council seats. Absentee ballots, also called mail-in ballots, can be requested through the County Clerk's office by completing an absentee ballot request form available at www.losalamosnm.us or by contacting the Clerk for New Mexico allows any registered voter to vote by mail without providing a reason. Completed absentee ballots must be returned by 7:00 PM on Election Day either by mail (postmark does not count; must be received), in person at the County Clerk's office, or at any ballot drop box location in Los Alamos County.
Transparency in Los Alamos County elections is strong; citizens can request election related public records under the New Mexico Inspection of Public Records Act (NMSA 1978, §§ 14-2-1 to 14-2-12), including ballot counting procedures, voting machine test results, and canvass materials. Los Alamos County Clerk posts election results and turnout statistics on Los Alamos County website following each election.
Economy & Demographics
Los Alamos County's economy is dominated by scientific research and technology, making it one of the most unique economic profiles in the United States. Los Alamos National Laboratory (LANL) is by far the largest employer, with approximately 12,000 employees and thousands more contract workers, driving Los Alamos County's economy through high-wage scientific and technical jobs. LANL conducts nuclear weapons research, stockpile stewardship, national security science, and multidisciplinary research in fields including materials science, renewable energy, supercomputing, and bioscience.
- The median household income in Los Alamos County is approximately $121,000, among the highest in New Mexico and significantly above the national average, reflecting the concentration of highly educated professionals.
Los Alamos County's workforce is exceptionally well-educated, with over 60% holding graduate degrees - the highest percentage in the nation - and unemployment rates typically below state and national averages, often ranging between 3-4%. Key economic sectors beyond the national laboratory include advanced manufacturing, environmental remediation, healthcare, education, retail, and hospitality. Contractors supporting LANL operations, such as Triad National Security LLC (the laboratory's managing contractor), provide substantial employment.
The local community Medical Center is a significant healthcare employer.Tourism contributes to the economy through visits to Bandelier National Monument, the Bradbury Science Museum, and historic Manhattan Project sites, particularly following Los Alamos County's designation as part of the Manhattan Project National Historical Park in 2015. Los Alamos Commerce and Development Corporation actively recruits technology startups and research-based businesses to diversify the economic base. Small business and retail sectors serve the resident population and visitors.
Economic development initiatives focus on technology commercialization, using LANL research for private sector growth, and developing infrastructure to support quality of life for the highly skilled workforce.
Transparency Score
Court Records: Yes: Online | Property: Yes: Online GIS & Assessor | Arrest/Jail: Limited: By Request | Vital Records: Limited: In-Person/Mail Required | Business: Yes: Online (State Portal) | Elections: Yes: Online | Overall Score: 8/10, Los Alamos County provides strong digital access to property, court, and election records; law enforcement records require direct contact, and vital records involve in-person or mail requests with proper identification.
Frequently Asked Questions
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Cities & Towns in Los Alamos County
Explore public records for 1 cities and communities in Los Alamos County, New Mexico.