County ZIP codes · Wyoming · FIPS 56003

Big Horn County, WY ZIP Codes

Big Horn County, Wyoming has 15 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 13 of the residential ones lie mainly in Big Horn County and 2 mainly in a neighboring county; 4 cross the county line. Median household income ranges from $60,295 in 82431 (Lovell) to $68,839 in 82410 (Basin) (Census Bureau, ACS 2020-2024).

ACS2020-24
Census2020

Where are the ZIP codes of Big Horn County?

The residential ZIP codes of Big Horn 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?

82431 · $60k 82410 · $69k

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $65,583 and $67,534.

They carry 15 postal town names.

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

All 15 residential ZIP codes in Big Horn County

13 ZIP codes lie mainly in Big Horn County; 2 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Big Horn County, largest first; "In this county" is the share of the ZIP's land in the county
						In this county
82431	Lovell	3,224	7	$60k	$221k	100%
82426	Greybull	2,941	11	$67k	$209k	100%
82410	Basin	1,938	12	$69k	$197k	100%
82420	Cowley	822	15	$78k	$232k	100%
82412	Byron	704	53	$65k	$182k	100%
82411	Burlington	520	4	$104k	$233k	100%
82421	Deaver	379	5	$42k	–	50%
82432	Manderson	307	2	$45k	$63k	100%
82441	Shell	265	1	$60k	–	100%
82423	Frannie	209	17	–	$119k	90%
82428	Hyattville	158	2	–	$266k	100%
82434	Otto	122	2	–	–	100%
82422	Emblem	62	6	–	–	100%

Partly in Big Horn County

Residential ZIP codes mainly in another county that reach at least 1% into Big Horn County, by their share here
						In this county
82435	Powell	12,337	16	$68k	$363k	4%
82401	Worland	7,067	13	$66k	$204k	3%

Download the 15 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?

4 ZIP codes of Big Horn County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Big Horn County and in the neighboring counties
ZIP	In Big Horn	Elsewhere
82435	4%	Park County 96%
82401	3%	Washakie County 83%; Hot Springs County 14%
82421	50%	Park County 50%
82423	90%	Park County 10%

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

Which first three digits do Big Horn County'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 Big Horn County starts with 824.

Three-digit prefixes of Big Horn 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 Big Horn County's
Prefix	Sectional center	Here	All codes
824	Casper, WY (SCF 826)	15	22

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