Colorado · Checked Against SSA's Locator October 1, 2026

Social Security Offices Near Longmont, CO

Where Is the Social Security Office Nearest Longmont, CO?

SSA assigns all 3 ZIP codes in Longmont, CO to the Louisville Social Security Office at 480 W Dahlia St, Louisville, about 14 miles away, phone (877) 405-5872, open Monday to Friday, 9:00 AM to 4:00 PM.

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Closest Social Security Offices to Longmont, CO

Straight-line distance from the center of Longmont (U.S. Census Gazetteer) to each office's address (U.S. Census Bureau geocoder). Office hours and phone numbers from SSA's office data, checked against SSA's Office Locator on October 1, 2026; confirm with SSA's Office Locator before you go.

Map of Social Security Offices Near Longmont

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Which Social Security Office Serves Your ZIP Code in Longmont?

SSA assigns all 3 ZIP codes in Longmont to the Louisville Social Security Office in Louisville. SSA assigns offices by ZIP code, so the office to use is the one listed for your ZIP.

Social Security office assigned to each ZIP code in Longmont
ZIP codeOffice SSA assignsDistance
80501Louisville Social Security Office for ZIP code 8050114 miles
80503Louisville Social Security Office for ZIP code 8050314 miles
80504Louisville Social Security Office for ZIP code 8050415 miles

ZIP codes 80501, 80503 and 80504 go to the Louisville Social Security Office, 480 W Dahlia St, Louisville.

Assigned offices from SSA's Office Locator, looked up by ZIP code on October 1, 2026. ZIP codes are those whose area overlaps Longmont (U.S. Census Bureau, 2020 ZIP Code Tabulation Areas). Distance is straight-line, from the center of the ZIP code to the office.

Social Security Offices Near Areas Around Longmont

Where people in nearby communities go, and how far it is. Each area's office is the one SSA assigns to its ZIP codes.

Social Security Office Near Thornton

Thornton is about 19 miles southeast of central Longmont. Its ZIP codes are split between offices: 80229, 80233, 80241 and 80260 go to the Lakewood Social Security Office in Lakewood; 80602 goes to the Aurora Social Security Office in Aurora.

More on Social Security offices near Thornton

Social Security Office Near Boulder

Boulder is about 13 miles southwest of central Longmont. SSA assigns its ZIP codes (80301, 80304, 80305 and 80310) to the Louisville Social Security Office at 480 W Dahlia St, Louisville, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Boulder

Social Security Office Near Loveland

Loveland is about 17 miles north of central Longmont. SSA assigns its ZIP codes (80537 and 80538) to the Fort Collins Social Security Office at 301 S Howes St, 4th Floor, Fort Collins, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Loveland

Social Security Office Near Northglenn

Northglenn is about 19 miles south of central Longmont. SSA assigns its ZIP codes (80233 and 80234) to the Lakewood Social Security Office at 13151 W Alameda Pkwy, Lakewood, open Monday to Friday, 9:00 AM to 4:00 PM. The Louisville Social Security Office is closer to central Northglenn (about 9.1 miles, against 17 miles), but it isn't the office SSA assigns.

More on Social Security offices near Northglenn

Social Security Office Near Broomfield

Broomfield is about 15 miles south of central Longmont. SSA assigns its ZIP codes (80020, 80021 and 80023) to the Louisville Social Security Office at 480 W Dahlia St, Louisville, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Broomfield

Social Security Office Near Johnstown

Johnstown is about 14 miles northeast of central Longmont. SSA assigns its ZIP code, 80534, to the Greeley Social Security Office at 5400 West 11 St, Suite A, Greeley, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Johnstown

Social Security Office Near Louisville

Louisville is about 14 miles south of central Longmont. SSA assigns its ZIP code, 80027, to the Louisville Social Security Office at 480 W Dahlia St, Louisville, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Louisville

Social Security Office Near Lafayette

Lafayette is about 12 miles south of central Longmont. SSA assigns its ZIP code, 80026, to the Louisville Social Security Office at 480 W Dahlia St, Louisville, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Lafayette

Social Security Office Near Mead

Mead is about 7.2 miles northeast of central Longmont. Its ZIP codes are split between offices: 80504 goes to the Louisville Social Security Office in Louisville; 80542 goes to the Greeley Social Security Office in Greeley.

More on Social Security offices near Mead

Social Security Office Near Firestone

Firestone is about 8.1 miles east of central Longmont. Its ZIP codes are split between offices: 80504 goes to the Louisville Social Security Office in Louisville; 80520 goes to the Greeley Social Security Office in Greeley.

More on Social Security offices near Firestone

How to Get an Appointment at the Louisville Social Security Office

SSA asks you to make an appointment before you visit an office. You can schedule one online on SSA's appointment page by answering a few questions; the appointment may be by phone or in person, and you can change or cancel it from the confirmation email or text.

To book by phone, call the Louisville Social Security Office at (877) 405-5872, or SSA's national number, 1-800-772-1213 (TTY 1-800-325-0778), Monday through Friday, 8 a.m. to 7 p.m. local time. Help is available in English, Spanish and other languages.

See office hours and appointments for the best times to call and visit.

Can You Skip the Trip?

You can often replace a card, update your address or get a benefit letter online with a my Social Security account. If you need to go in, check what to bring.

Social Security Offices Near Other Colorado Cities

Frequently Asked Questions

Where Is the Social Security Office in Longmont?

There isn't an office in Longmont, CO itself. The closest is the Louisville Social Security Office, 480 W Dahlia St, Louisville, CO 80027, about 14 miles away.

Which Social Security Office Serves My ZIP Code in Longmont?

SSA assigns all 3 ZIP codes in Longmont to the Louisville Social Security Office in Louisville. SSA assigns offices by ZIP code, and the assigned office isn't always the closest one. Look up your ZIP code in the table on this page or in SSA's Office Locator.

What Are Social Security Office Hours Near Longmont?

The Louisville Social Security Office is open Monday to Friday, 9:00 AM to 4:00 PM, according to SSA's office data (checked against SSA's Office Locator on October 1, 2026). Offices close on weekends and federal holidays.

What Is the Phone Number for the Social Security Office Near Longmont?

SSA lists (877) 405-5872 for the Louisville Social Security Office. SSA's national number is 1-800-772-1213.

How Do I Make an Appointment at the Social Security Office Near Longmont?

Schedule online on SSA's appointment page, where the appointment may be by phone or in person, or call the Louisville Social Security Office at (877) 405-5872 or SSA at 1-800-772-1213 (TTY 1-800-325-0778), Monday through Friday, 8 a.m. to 7 p.m. local time. SSA asks you to make an appointment before visiting an office.

Every Social Security office in Colorado

Sources

  1. Social Security Administration, field office and resident station data (updated March 9, 2026)
  2. SSA Office Locator (offices and ZIP code assignments, checked October 1, 2026)
  3. U.S. Census Bureau: geocoder, 2023 Gazetteer files and 2020 ZIP Code Tabulation Area relationship files
  4. SSA: Make an appointment
  5. SSA: Contact by phone
  6. SSA: Office locator guidance (appointments and Card Centers)

Independent site, not affiliated with the Social Security Administration. Office addresses, phone numbers and hours come from SSA's public office data. To apply for benefits or manage your record, go to SSA directly at ssa.gov.