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County ZIP codes · Colorado · FIPS 08069

Larimer County, CO ZIP Codes

Larimer County, Colorado has 30 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 23 residential and 7 for PO boxes or a single organization. 18 of the residential ones lie mainly in Larimer County and 5 mainly in a neighboring county; 10 cross the county line. Median household income ranges from $85,035 in 80524 (Fort Collins) to $180,492 in 80547 (Timnath) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Larimer County?

80503 · Longmont: $114k80512 · Bellvue: $98k80513 · Berthoud: $127k80515 · Drake: $67k80517 · Estes Park: $95k80521 · Fort Collins: $58k80524 · Fort Collins: $85k80525 · Fort Collins: $92k80526 · Fort Collins: $89k80528 · Fort Collins: $130k80532 · Glen Haven: $53k80534 · Johnstown: $129k80535 · Laporte: $111k80536 · Livermore: $118k80537 · Loveland: $86k80538 · Loveland: $87k80540 · Lyons: $140k80545 · Red Feather Lakes: $93k80547 · Timnath: $181k80549 · Wellington: $108k80550 · Windsor: $126k80612 · Carr: –82063 · Jelm: $105k8206380512805368054580517806128054080524805498053780538805038053580513805158055080534805258052180503 · Longmont: $114k80512 · Bellvue: $98k80513 · Berthoud: $127k80515 · Drake: $67k80517 · Estes Park: $95k80521 · Fort Collins: $58k80524 · Fort Collins: $85k80525 · Fort Collins: $92k80526 · Fort Collins: $89k80528 · Fort Collins: $130k80532 · Glen Haven: $53k80534 · Johnstown: $129k80535 · Laporte: $111k80536 · Livermore: $118k80537 · Loveland: $86k80538 · Loveland: $87k80540 · Lyons: $140k80545 · Red Feather Lakes: $93k80547 · Timnath: $181k80549 · Wellington: $108k80550 · Windsor: $126k80612 · Carr: –82063 · Jelm: $105k820638051280536805458051780612805408052480549805378053880503805358051380515805508053480503 · Longmont: $114k80512 · Bellvue: $98k80513 · Berthoud: $127k80515 · Drake: $67k80517 · Estes Park: $95k80521 · Fort Collins: $58k80524 · Fort Collins: $85k80525 · Fort Collins: $92k80526 · Fort Collins: $89k80528 · Fort Collins: $130k80532 · Glen Haven: $53k80534 · Johnstown: $129k80535 · Laporte: $111k80536 · Livermore: $118k80537 · Loveland: $86k80538 · Loveland: $87k80540 · Lyons: $140k80545 · Red Feather Lakes: $93k80547 · Timnath: $181k80549 · Wellington: $108k80550 · Windsor: $126k80612 · Carr: –82063 · Jelm: $105k820638051280536805458051780612805408052480549805378053880513
The residential ZIP codes of Larimer County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$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 its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $88,686 and $126,726.

They carry 18 postal town names.

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

All 23 residential ZIP codes in Larimer County

18 ZIP codes lie mainly in Larimer County; 5 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Larimer County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
80525 Fort Collins 54,211 2,321 $92k $588k 100%
80538 Loveland 50,110 490 $87k $498k 100%
80537 Loveland 44,425 363 $86k $484k 97%
80526 Fort Collins 44,326 1,386 $89k $552k 100%
80524 Fort Collins 40,030 326 $85k $561k 76%
80521 Fort Collins 38,776 2,766 $58k $565k 100%
80528 Fort Collins 24,960 1,352 $130k $705k 100%
80513 Berthoud 18,271 256 $127k $601k 64%
80549 Wellington 14,325 77 $108k $476k 95%
80517 Estes Park 9,657 32 $95k $702k 100%
80547 Timnath 8,821 1,566 $181k $742k 100%
80536 Livermore 2,383 6 $118k $631k 100%
80512 Bellvue 1,903 4 $98k $625k 100%
80535 Laporte 1,896 33 $111k $483k 100%
80545 Red Feather Lakes 937 3 $93k $395k 100%
80515 Drake 934 19 $67k $545k 100%
80532 Glen Haven 185 5 $53k $312k 100%
82063 Jelm 62 0 $105k $404k 80%

Partly in Larimer County

Residential ZIP codes mainly in another county that reach at least 1% into Larimer County, by their share here
In this county
80540 Lyons 4,642 30 $140k $796k 35%
80534 Johnstown 20,502 427 $129k $553k 20%
80612 Carr 494 2 – $637k 15%
80550 Windsor 46,456 886 $126k $582k 9%
80503 Longmont 35,846 391 $114k $756k 2%

Download the 30 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

10 ZIP codes of Larimer County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Larimer County and in the neighboring counties
ZIPIn LarimerElsewhere
805509%Weld County 91%
8053797%Weld County 3%
8052476%Weld County 24%
805032%Boulder County 98%
8053420%Weld County 80%
8051364%Weld County 31%; Boulder County 5%
8054995%Weld County 5%
8054035%Boulder County 65%
8061215%Weld County 85%
8206380%Albany County 20%

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

PO Box and single-organization ZIP codes

ZIP codes in Larimer County without a residential area (GeoNames postal codes)
ZIPPostal name
80511Estes Park
80522Fort Collins
80523Fort Collins
80527Fort Collins
80539Loveland
80541Masonville
80553Fort Collins

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do Larimer County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Larimer County's ZIP codes use 3 prefixes: 805, 806 and 820.

Three-digit prefixes of Larimer County'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 Larimer County's
PrefixSectional centerHereAll codes
805 Denver, CO (SCF 800) 28 42
806 Denver, CO (SCF 800) 1 32
820 Cheyenne, WY (SCF 820) 1 28

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