What city is 81090 in?

81090 is a Walsh, CO mailing address. None of its land lies inside a Census-defined city or community.

What is the population of 81090?

About 829 people (±109), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 875.

What is the median household income in 81090?

$46,389 (±$21,956), 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 81090?

2 USPS carrier routes with 125 residential and 5 business mailboxes (130 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 81090?

The closest, measured center to center: 81087 (10.2 mi, Vilas), 67862 (17.4 mi, Manter), 81084 (17.5 mi, Two Buttes), 67953 (22.9 mi, Richfield) and 81029 (24.8 mi, Campo).

81090 ZIP Code, Walsh, CO

81090 is a ZIP code in Walsh, Colorado in Baca County. It covers 653 square miles of land. The closest ZIP codes are 81087, 67862 and 81084. 829 people live here in 494 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (71%). Median household income is $46,389, well below the Colorado median of $95,470; the median age is 56.8, older than most ZIP codes.

Quick facts

Mailing city: Walsh, CO
County: Baca County
Land area: 653 sq mi
Population: 829
Median household income: $46,389
Carrier routes: 2 (125 homes)

Key figures

Measure	Value
Residents	829
Households	494
Median household income	$46,389
Income per person	$34,105
Median age	56.8
Homeowners	70.6%
Median home value	$155,100
Median rent	$583
Bachelor's degree or higher	27.7%
Average commute (minutes)	15.7
Households with kids under 18	11.3%
Moved in the past year	0.9%
Below the poverty line	27.1%
Broadband internet	81.4%
Speak a non-English language at home	2.2%

Household income

% of households	Value
<$10K	0.4%
$10–15K	19.8%
$15–25K	18.8%
$25–35K	8.9%
$35–50K	5.5%
$50–75K	22.1%
$75–100K	5.9%
$100–150K	15.6%
$150–200K	0.8%
$200K+	2.2%

Age

% of all residents	Value
<10	4.5%
10–19	5.9%
20–24	2.1%
25–34	15.7%
35–44	4.7%
45–54	12.5%
55–64	21.3%
65–74	20.6%
75+	12.7%

Tenure

% of housing units	Value
Owned, with mortgage	12.4%
Owned outright	45.9%
Rented	24.2%
Vacant	17.5%

Type of building

% of housing units	Value
Detached house	70.6%
Townhome	0.0%
2–4 units	1.3%
5–19 units	10.8%
20+ units	6.2%
Mobile / other	11.0%

Businesses in 81090

18 business establishments with 115 employees (ZIP Codes Business Patterns 2023).

Wholesale Trade: 5
Retail Trade: 4
Construction: 3
Finance and Insurance: 3

EDDM carrier routes

81090 has 2 USPS carrier routes with 125 residential and 5 business mailboxes. Open the EDDM route map.

Carrier routes in 81090

81090 has 2 USPS carrier routes (2 highway contract (H)) with 125 residential and 5 business mailboxes. Routes range from 22 homes (H065) to 103 homes (H060); the median route has 63 homes. The Census counted 494 households in 81090 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	2
250–499	0
500–749	0
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 81090 for…

Most businesses

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

Route H065 — USPS business mailboxes 3, 22 homes
Route H060 — USPS business mailboxes 2, 103 homes

Select these 2 routes on the route map

Every carrier route in 81090

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
H060	Highway contract	103	2	$54,218	—	—	—
H065	Highway contract	22	3	$54,218	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 81090 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

81087 — Vilas town, CO (10.2 mi)
67862 — Manter city, KS (17.4 mi)
81084 — Two Buttes town, CO (17.5 mi)
67953 — Richfield city, KS (22.9 mi)
81029 — Campo town, CO (24.8 mi)

Areas that include 81090

Mail every home in 81090

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) 81090, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 81090 in?: 81090 is a Walsh, CO mailing address. None of its land lies inside a Census-defined city or community.
What county is 81090 in?: 81090 is in Baca County.
What is the population of 81090?: About 829 people (±109), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 875.
What is the median household income in 81090?: $46,389 (±$21,956), 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 81090?: 2 USPS carrier routes with 125 residential and 5 business mailboxes (130 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 81090?: The closest, measured center to center: 81087 (10.2 mi, Vilas), 67862 (17.4 mi, Manter), 81084 (17.5 mi, Two Buttes), 67953 (22.9 mi, Richfield) and 81029 (24.8 mi, Campo).

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