Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/WY/CASPER

Casper ZIP codes, Wyoming

Casper, WY has 5 ZIP codes (82604, 82601, 82609, 82602 and 82605) and area code 307. The largest is 82604.

USPS city name
5 ZIP codes
Overlapping the city
1 more
Population
58,839
Area code
307
State
Wyoming

Mail addressed to Casper uses the ZIP codes above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Casper in numbers

About 58,839 people live in Casper, in 25,565 households, the 2nd-largest of Wyoming's 192 census places. The median household income is $70,218 a year, 8% below the Wyoming median of $76,176 (US: $80,734). The median owner-occupied home is valued at $260,400 (16% below the Wyoming median), and median gross rent is $1,009 a month. The median age is 37.3; 30.5% of adults 25 and over hold a bachelor's degree or higher (30.6% across Wyoming); the average commute takes 17 minutes.

Population58,839Casper58,839
Households25,565Casper25,565
Median age37.3Casper37.3Wyoming39.1US 38.9
Median household income$70,218Casper$70,218Wyoming$76,176US $80,734
Median home value$260,400Casper$260,400Wyoming$309,700US $332,700
Median gross rent$1,009Casper$1,009Wyoming$992US $1,413
Bachelor's degree or higher30.5%Casper30.5%Wyoming30.6%US 35.7%
Mean commute17.0 minCasper17.0 minWyoming18.8 minUS 26.4 min
Population density2,199 / sq miCasper2,199 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Casper city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Casper

ZIP codes with the USPS city name Casper
ZIP City Type Population Median income Median home
82604 Casper , WY Standard 27,487 $79,118 $288,900
82601 Casper , WY Standard 26,721 $67,642 $249,100
82609 Casper , WY Standard 18,714 $71,010 $293,900
82602 Casper , WY No street area — — —
82605 Casper , WY No street area — — —

Other ZIP codes overlapping Casper

These ZIP codes cover part of Casper but are addressed as somewhere else.

ZIP codes overlapping Casper
ZIP City Type Population Median income Median home
82644 Mills , WY Standard 2,098 $53,750 $175,900

Map of Casper ZIP codes

8260482601826098260282605

The ZIP codes of Casper, WY, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Casper

Towns near Casper
TownPopulationDistance
Mills 4,390 3.6 mi
Evansville 2,779 3.6 mi
Bar Nunn 3,008 5.7 mi
Glenrock 2,941 23.3 mi

More nearby: every ZIP code in Natrona County · Wyoming ZIP codes

Cite this page

zipcodes.pro. “Casper, WY ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wy/casper

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