What city is 80521 in?

80521 is a Fort Collins, CO mailing address. By land area, 40% lies inside Fort Collins; the rest is outside any Census-defined city or community.

What is the population of 80521?

About 38,776 people (±1,426), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 37,451.

What is the median household income in 80521?

$58,082 (±$4,661), compared with $95,470 for Colorado as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 80521?

22 USPS carrier routes with 14,164 residential and 446 business mailboxes (14,610 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 80521?

The closest, measured center to center: 80526 (4.9 mi, Fort Collins), 80524 (6.3 mi, Fort Collins), 80525 (6.4 mi, Fort Collins), 80538 (7 mi, Loveland), 80528 (9.1 mi, Fort Collins) and 80547 (9.7 mi, Timnath).

80521 ZIP Code, Fort Collins, CO

80521 is a ZIP code in Fort Collins, Colorado in Larimer County. It covers 14 square miles of land. The closest ZIP codes are 80526, 80524 and 80525. 38,776 people live here in 14,260 households, more than in 9 of every 10 Colorado ZIP codes. At about 2,766 people per square mile it has suburban density, and most households rent (37% own). Median household income is $58,082, well below the Colorado median of $95,470; the median age is 22.9, younger than most ZIP codes.

Quick facts

Mailing city: Fort Collins, CO
County: Larimer County
Land area: 14 sq mi
Population: 38,776
Median household income: $58,082
Carrier routes: 22 (14,164 homes)

Key figures

Measure	Value
Residents	38,776
Households	14,260
Median household income	$58,082
Income per person	$33,574
Median age	22.9
Homeowners	36.8%
Median home value	$564,900
Median rent	$1,444
Bachelor's degree or higher	64.0%
Average commute (minutes)	19
Households with kids under 18	14.9%
Moved in the past year	35.5%
Below the poverty line	32.6%
Broadband internet	83.0%
Speak a non-English language at home	10.0%

Household income

% of households	Value
<$10K	12.0%
$10–15K	4.9%
$15–25K	9.2%
$25–35K	6.8%
$35–50K	12.4%
$50–75K	14.5%
$75–100K	10.7%
$100–150K	13.7%
$150–200K	6.7%
$200K+	9.0%

Age

% of all residents	Value
<10	4.7%
10–19	22.1%
20–24	29.3%
25–34	16.3%
35–44	10.0%
45–54	5.8%
55–64	4.3%
65–74	4.6%
75+	3.0%

Tenure

% of housing units	Value
Owned, with mortgage	22.2%
Owned outright	12.9%
Rented	60.0%
Vacant	4.9%

Type of building

% of housing units	Value
Detached house	48.4%
Townhome	5.4%
2–4 units	11.7%
5–19 units	16.3%
20+ units	16.0%
Mobile / other	2.1%

Businesses in 80521

653 business establishments with 5,997 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 136
Accommodation and Food Services: 82
Health Care and Social Assistance: 70
Other Services (except Public Administration): 67
Construction: 63
Real Estate and Rental and Leasing: 60
Retail Trade: 36
Finance and Insurance: 33

EDDM carrier routes

80521 has 22 USPS carrier routes with 14,164 residential and 446 business mailboxes. Open the EDDM route map.

Carrier routes in 80521

80521 has 22 USPS carrier routes (20 city (C), 2 rural (R)) with 14,164 residential and 446 business mailboxes. Routes range from 109 homes (R042) to 1,170 homes (C015); the median route has 596 homes. The Census counted 14,260 households in 80521 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	7
500–749	7
750–999	4
1,000–1,499	3
1,500+	0

Best routes in 80521 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route C034 — USPS business mailboxes 171, 398 homes
Route C100 — USPS business mailboxes 82, 1,087 homes
Route C008 — USPS business mailboxes 30, 553 homes
Route C006 — USPS business mailboxes 29, 811 homes
Route C076 — USPS business mailboxes 27, 743 homes

Select these 5 routes on the route map

Every carrier route in 80521

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C002	City	434	2	$32,624	—	—	—
C006	City	811	29	$66,680	—	—	—
C008	City	553	30	$66,680	—	—	—
C009	City	560	3	$85,868	—	—	—
C013	City	889	14	$58,608	—	—	—
C015	City	1,170	10	$85,868	—	—	—
C018	City	774	4	$58,608	—	—	—
C021	City	438	20	$77,101	—	—	—
C022	City	412	2	$37,086	—	—	—
C026	City	859	1	$58,608	—	—	—
C029	City	1,160	5	$99,806	—	—	—
C030	City	683	4	$77,101	—	—	—
C034	City	398	171	$66,680	—	—	—
C040	City	561	11	$83,910	—	—	—
C055	City	660	13	$83,910	—	—	—
C058	City	331	4	$99,806	—	—	—
C076	City	743	27	$99,806	—	—	—
C095	City	448	2	$123,699	—	—	—
C098	City	454	4	$85,868	—	—	—
C100	City	1,087	82	$37,086	—	—	—
R006	Rural	630	8	$110,405	—	—	—
R042	Rural	109	0	$110,405	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 80521 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

80526 — Fort Collins city, CO (4.9 mi)
80524 — Fort Collins city, CO (6.3 mi)
80525 — Fort Collins city, CO (6.4 mi)
80538 — Loveland city, CO (7 mi)
80528 — Fort Collins city, CO (9.1 mi)
80547 — Timnath town, CO (9.7 mi)
80535 — Laporte CDP, CO (10.4 mi)
80550 — Windsor town, CO (14 mi)

Areas that include 80521

Fort Collins, CO ZIP codes — 5 ZIP codes
Larimer County ZIP codes — 21 ZIP codes
Colorado ZIP code data

Where it ranks

Mail every home in 80521

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 80521, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 80521 in?: 80521 is a Fort Collins, CO mailing address. By land area, 40% lies inside Fort Collins; the rest is outside any Census-defined city or community.
What county is 80521 in?: 80521 is in Larimer County.
What is the population of 80521?: About 38,776 people (±1,426), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 37,451.
What is the median household income in 80521?: $58,082 (±$4,661), compared with $95,470 for Colorado as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 80521?: 22 USPS carrier routes with 14,164 residential and 446 business mailboxes (14,610 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 80521?: The closest, measured center to center: 80526 (4.9 mi, Fort Collins), 80524 (6.3 mi, Fort Collins), 80525 (6.4 mi, Fort Collins), 80538 (7 mi, Loveland), 80528 (9.1 mi, Fort Collins) and 80547 (9.7 mi, Timnath).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.