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City ZIP codes · Colorado

Fort Collins, CO ZIP Codes

9 ZIP codes use the postal name Fort Collins, Colorado (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 5 residential and 4 for PO boxes or a single organization. Median household income runs from $85,035 in 80524 to $130,350 in 80528, 1.5 times as much (Census Bureau, ACS 2020-2024). Fort Collins's most populous ZIP code is 80525, with 54,211 people (ACS 2020-2024); 71% of its land is in the city of Fort Collins.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Fort Collins's ZIP codes?

80521: $58k median household income80524: $85k median household income80525: $92k median household income80526: $89k median household income80528: $130k median household income805248052680525805288052180521: $58k median household income80524: $85k median household income80525: $92k median household income80526: $89k median household income80528: $130k median household income805248052680525805288052180521: $58k median household income80524: $85k median household income80525: $92k median household income80526: $89k median household income80528: $130k median household income8052480526805258052880521
The 5 residential ZIP codes named Fort Collins, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Fort Collins's ZIP codes?

The highest median household income is in 80528 ($130,350), the lowest in 80524 ($85,035). Home values run from $551,800 in 80526 to $705,000 in 80528.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 5 residential ZIP codes of Fort Collins

Residential ZIP codes with the postal name Fort Collins, CO, largest first (ACS 2020-2024); sort by any column
County
80525 Larimer County 54,211 2,321 $92k $588k
80526 Larimer County 44,326 1,386 $89k $552k
80524 Larimer County 40,030 326 $85k $561k
80521 Larimer County 38,776 2,766 $58k $565k
80528 Larimer County 24,960 1,352 $130k $705k

Download the 9 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Fort Collins

4 ZIP codes named Fort Collins have no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Fort Collins, CO: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
80522Larimer County
80523Larimer County
80527Larimer County
80553Larimer County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Fort Collins's ZIP codes reach?

Fort Collins's residential ZIP codes lie in 2 counties: Larimer County (5 ZIP codes mainly there), Weld County (part of a ZIP code).

Which places do Fort Collins's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Fort Collins's residential ZIP codes cover Fort Collins itself and 1 other place, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Fort Collins's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Fort Collins starts with 805.

Three-digit prefixes of Fort Collins's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Fort Collins's
PrefixSectional centerHereAll codes
805 Denver, CO (SCF 800) 9 42

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.