Longmont, CO ZIP Codes, Coordinates & Counties
Longmont, Colorado has 3 ZIP codes in Boulder county. The approximate center of Longmont is 40.166, -105.112. Longmont has about 410,643 known street addresses.
ZIP codes in Longmont, CO
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 80501 | Boulder | 40.165 | -105.103 |
| 80503 | Boulder | 40.17 | -105.204 |
| 80504 | Boulder | 40.164 | -105.029 |
Counties Longmont spans
Boulder
Most common streets in Longmont
Pike, Oxford, 75th, Nelson, 63rd, 9th, 95th, Quail, Main, 107th
Frequently asked questions
What ZIP codes are in Longmont, CO?
Longmont, Colorado has 3 ZIP codes, ranging from 80501 to 80504. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is Longmont, CO in?
Longmont is in Boulder county.
What are the latitude and longitude of Longmont, CO?
The approximate center of Longmont, Colorado is latitude 40.166, longitude -105.112. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does Longmont, CO have?
Longmont has 3 ZIP codes.
How many addresses are in Longmont, CO?
Longmont, Colorado has about 410,643 known street addresses in the sthan.io US address database.
What are the most common streets in Longmont, CO?
Some of the most common street names in Longmont are Pike, Oxford, 75th, Nelson, 63rd, 9th.
What cities are near Longmont, CO?
Cities near Longmont include Niwot (5 mi), Mead (8 mi), Berthoud (9 mi), Erie (9 mi), Firestone (10 mi).
Cities near Longmont
Niwot, CO (5 mi) Mead, CO (8 mi) Berthoud, CO (9 mi) Erie, CO (9 mi) Firestone, CO (10 mi) Lafayette, CO (11 mi) Dacono, CO (11 mi) Frederick, CO (11 mi)
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View the API →Last updated: June 2026 · Data: sthan.io US address database