ZIP Codes of Crook County, WY

Population & People
Population & People
Total Population
7,140
Household Income
Household Income
Median Income
$70,913
Housing
Housing
Total Housing Units
3,588
Business & Economy
Business & Economy
Total Businesses
272
Employment
Employment
Employment Rate
61.78%
Education
Education
Bachelor's Degree+
24.72%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 7 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:7 ZIP Codes (7 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:307 / 406
Timezone:Mountain (GMT -07:00)
Local Time:2:14:25 PM
Population:7,140 [See All]
FIPS:56011
Land Area:2,708 sq mi
Water Area:12 sq mi
Coordinates:44.6105, -104.4958
Quick Link:
https://www.zip-codes.com/county/wy-crook.asp
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Extreme education divide
Bachelor's share ranges 11.0% to 62.6% across ZIPs — a 52-point gap.

Standout ZIPs in this County


Most Populous
Moorcroft · 2,955 people
41.4% of county total
Highest Income
Sundance · $89,306 median
1.3× county average
Largest Land Area
Moorcroft · 745.7 sq mi
Spans the most ground
Fastest Growth
Sundance · 13.5% (10-yr)
2,053 → 2,331 residents
Most Educated
Sundance · 35.3% bachelor's+
650 of 1,842 adults 25+

Things worth knowing about Crook County


7,140 residents live across 7 ZIPs covering 2,708 sq mi, served by 7 distinct USPS-recognized cities.

Population moved from 7,041 to 7,140 from 2014 to 2024 — a +1.4% change. 4 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 82729 (Sundance, $89,306 median) and poorest ZIP 82710 (Aladdin, $53,603) are 26.4 miles apart — a 1.7× income gap across local geography.

Median home values vary 8.1× across this county — from $246,000 in 82720 (Hulett) to $2,000,001 in 82712 (Beulah).

Density varies across the county — from 1 people/sq mi in 82710 (Aladdin) to 4 in 82721 (Moorcroft).

Educational attainment ranges from 11.0% bachelor's+ in 82720 (Hulett) to 62.6% in 82712 (Beulah) — the breadth of educational profiles across the area.

Within Wyoming, this is the #21 most populous of 28 counties and ranks #19 for median household income .

Weighted by population, the typical household earns about $78,356 across the county — reflecting what a typical resident sees, not a simple ZIP average.

24.7% of adults age 25+ hold a bachelor's degree or higher (1,254 of 5,073 reporting).

7 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Crook County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
2,708
square miles
Avg density
2.6
people per sq mi
Population
7,140
across 7 ZIPs
Moorcroft
745.7 sq mi
2,955 residents
Hulett
695.1 sq mi
995 residents
Sundance
641.9 sq mi
2,331 residents

All ZIP Codes in Crook County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
82721MoorcroftStandard2,955$72,865745.71.4%
82729SundanceStandard2,331$89,306641.913.5%
82720HulettStandard995$80,170695.1-13.5%
82711AlvaStandard254$58,623112.6126.8%
82710AladdinStandard246$53,603376.816.0%
82714Devils TowerStandard19678.3-10.9%
82712BeulahStandard16357.9-57.2%

Adjacent & Nearby Counties