Wyoming is served by 131 ZIP codes that span a range from 82001 in Cheyenne to 83127 near the Idaho border, covering all 23 counties and 122 cities across the state. These ZIP codes use prefixes from 820 through 831, efficiently organizing mail delivery across nearly 98,000 square miles of plains, mountains, and high desert. Laramie County, home to the state capital of Cheyenne, has the most ZIP codes at 11, followed closely by Natrona and Carbon counties with 10 each. With one of the lowest ZIP-code-to-land-area ratios in the country, Wyoming's postal geography is a reflection of its wide open spaces and famously sparse population.
Wyoming ZIP codes begin with prefixes ranging from 820 through 831, all falling within the broader "8" region assigned by the USPS to the Mountain West states. The 820–829 prefixes cover the majority of the state, from the capital city of Cheyenne in the southeast to the western valleys, while the 830–831 prefixes serve the far western portions of Wyoming near Yellowstone and the Teton Range. This wide span of prefixes reflects Wyoming's vast geographic area despite its relatively small population.
Laramie County leads Wyoming with 11 ZIP codes, which is fitting given that it is home to Cheyenne, the state capital and most populous city, requiring multiple postal zones to serve its spread-out residential, commercial, and military communities.
Quick facts
Wyoming has only 131 ZIP codes across its nearly 98,000 square miles, meaning each ZIP code covers an average of roughly 748 square miles — one of the largest per-ZIP-code land areas in the nation.
The ZIP code 82190 is assigned to Yellowstone National Park, making it one of the few ZIP codes in the country dedicated almost entirely to a national park.
Wyoming's ZIP code range begins at 82001 in Cheyenne and extends to 83127 in the far western town of Thayne near the Idaho border, spanning the entire width of the state from east to west.
Frequently asked questions
What ZIP codes are in Cheyenne, Wyoming?
Cheyenne, the state capital, is served by several ZIP codes including 82001, 82002, 82003, 82006, 82007, 82009, and 82010. These ZIP codes cover the city proper as well as surrounding areas within Laramie County.
How many ZIP codes does Wyoming have?
Wyoming has a total of 131 ZIP codes, serving 122 cities across 23 counties. Despite being the 10th largest state by area, Wyoming's low population density means it requires far fewer ZIP codes than most other states.
What do Wyoming ZIP codes start with?
Wyoming ZIP codes start with the prefixes 820 through 831. Most of the state is covered by the 820–829 range, while the 830 and 831 prefixes serve the western portions of the state near Jackson Hole and the Teton region. All Wyoming ZIP codes fall within the 82001 to 83127 range.
Which county in Wyoming has the most ZIP codes?
Laramie County has the most ZIP codes in Wyoming with 11, followed by Natrona County and Carbon County, each with 10. Laramie County's higher count reflects its status as home to Cheyenne, while Natrona County includes the city of Casper and Carbon County spans a large area of south-central Wyoming.
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131 WY ZIP codes with city, county,
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Last updated April 2026
Demographics & statistics
564,961
Population
39.0
Median age
$73,481
Median household income
$39,512
Per capita income
$252,615
Median home value
$525
Median monthly rent
76.5%
Home ownership
11.5%
Poverty rate
3.7%
Unemployment
201,637
Housing units
27.0%
Bachelor's or higher
Age distribution
MaleFemale
16,880
Under 5
15,016
19,223
5–9
17,100
20,437
10–14
18,179
20,073
15–19
17,855
20,050
20–24
17,836
38,361
25–34
34,123
39,339
35–44
34,993
33,632
45–54
29,918
18,895
55–59
16,807
20,186
60–64
17,957
32,294
65–74
28,727
14,578
75–84
12,967
5,046
85+
4,489
← Male
Female →
Age summary
Group
Count
%
Under 18
129,527
18.3%
18 and over
435,434
81.7%
65 and over
98,101
24.9%
Median age
39.0 years
Race & ethnicity
White82.3%
Hispanic or Latino5.7%
Two or more races5.6%
Other race2.7%
American Indian / Alaska Native2.1%
Black or African American0.8%
Asian0.8%
Native Hawaiian / Pacific Islander0.1%
Group
Count
%
White
492,893
82.3%
Hispanic or Latino
34,197
5.7%
Two or more races
33,305
5.6%
Other race
16,242
2.7%
American Indian / Alaska Native
12,307
2.1%
Black or African American
4,896
0.8%
Asian
4,682
0.8%
Native Hawaiian / Pacific Islander
636
0.1%
Household income
Under $10k4.4%
$10k–$15k4.2%
$15k–$25k7.3%
$25k–$35k7.9%
$35k–$50k11.6%
$50k–$75k19.4%
$75k–$100k13.6%
$100k–$150k16.7%
$150k–$200k7.5%
$200k+6.7%
Range
% of households
Under $10k
4.4%
$10k–$15k
4.2%
$15k–$25k
7.3%
$25k–$35k
7.9%
$35k–$50k
11.6%
$50k–$75k
19.4%
$75k–$100k
13.6%
$100k–$150k
16.7%
$150k–$200k
7.5%
$200k+
6.7%
Median income
$73,481
Housing
Home values
Under $50k7.4%
$50k–$100k8.2%
$100k–$150k8.8%
$150k–$200k10.4%
$200k–$300k21.6%
$300k–$500k21.2%
$500k–$1M12.0%
$1M+6.8%
Housing overview
Metric
Value
Median home value
$252,615
Median rent / month
$525
Owner occupied
76.5%
Renter occupied
22.7%
Vacant
25.0%
Single-family detached
73.9%
Large apartment buildings
0.9%
Mobile homes
16.9%
Median rooms
5.3
Avg household size (owned)
2.35
Year built
Era
%
2020 or later
0.4%
2010–2019
7.0%
2000–2009
13.2%
1990–1999
13.9%
1980–1989
12.1%
1970–1979
16.5%
1960–1969
7.2%
1950–1959
6.9%
1940–1949
6.1%
1939 or earlier
15.9%
Bedrooms
Size
% of units
No bedroom (studio)
2.3%
1 bedroom
9.3%
2 bedrooms
24.1%
3 bedrooms
42.3%
4 bedrooms
15.5%
5+ bedrooms
5.7%
Vehicles per household
Vehicles
% of households
No vehicle
1.9%
1 vehicle
21.7%
2 vehicles
33.0%
3 or more
42.6%
Heating fuel
Fuel type
%
Utility gas
29.9%
Electricity
18.9%
Propane / LP gas
35.1%
Fuel oil
0.7%
Wood
12.4%
No fuel used
0.3%
Households & families
Household type
Count
%
Married-couple family
115,881
58.2%
Cohabiting couple
15,670
5.3%
Male householder, no spouse
46,462
18.3%
Female householder, no spouse
50,767
17.5%
Households with children under 18
66,166
25.3%
Households with seniors (65+)
69,616
37.5%
Average household size
2.40
Marital status
Status
Male
Female
Never married
25.3%
18.8%
Married
58.3%
59.6%
Separated
0.7%
1.3%
Widowed
3.8%
8.4%
Divorced
10.6%
10.4%
Education
Less than 9th grade1.7%
Some HS, no diploma4.3%
HS graduate28.7%
Some college, no degree26.1%
Associate's degree11.6%
Bachelor's degree19.8%
Graduate / professional7.2%
Metric
%
HS diploma or higher
93.3%
Bachelor's or higher
27.0%
School enrollment (ages 3–17)
Type
Count
%
Nursery / preschool
8,008
4.2%
Kindergarten
6,875
3.8%
Elementary school
59,105
35.3%
High school
30,110
20.8%
College / grad school
36,256
19.9%
Employment
Industry of employment
Agriculture & mining22.3%
Education & healthcare17.9%
Arts, food & hospitality8.6%
Construction8.4%
Transportation & utilities7.6%
Retail trade6.7%
Professional & management6.1%
Public administration5.7%
Other services3.7%
Manufacturing3.7%
Finance & real estate3.7%
Wholesale trade1.5%
Information1.2%
Occupation
Category
%
Management, business & arts
37.5%
Service
16.0%
Sales & office
15.7%
Natural resources & construction
17.7%
Production & transportation
10.2%
Employment type
Type
%
Private sector
66.7%
Government
18.9%
Self-employed
10.6%
Unpaid family workers
0.9%
Commute
Method
%
Drive alone
67.3%
Carpool
8.3%
Public transit
0.5%
Walk
4.9%
Other means
2.4%
Avg commute (minutes)
16.7
Poverty
All people11.5%
Under 18 years10.5%
18 and over10.6%
Married-couple families4.5%
Female-led households20.4%
Income support
Source
% of households
Social Security
36.9%
Retirement income
25.8%
Supplemental Security
3.0%
Cash public assistance
1.1%
Food stamps / SNAP
3.9%
Health indicators
Condition
%
High blood pressure
29.7%
High cholesterol
29.0%
Heart disease
6.2%
Stroke
2.9%
Asthma
9.2%
Arthritis
21.7%
Kidney disease
2.7%
Pulmonary disease
6.7%
Cancer
6.6%
Behavior / access
%
Binge drinking
15.8%
No physical activity
22.4%
Less than 7 hrs sleep
29.1%
Fair or poor health
12.0%
Poor mental health
12.1%
Poor physical health
9.4%
No health insurance
14.2%
Visited doctor (checkup)
63.3%
Visited dentist
61.8%
Cholesterol screening
84.6%
Teeth loss
14.1%
Veterans & disability
Veterans
Count
%
Civilian veterans
41,664
10.4%
Disability
%
Any disability
14.0%
Under 18
2.4%
18–64 years
9.3%
65 and over
30.4%
Health insurance coverage
Type
%
Private insurance
69.1%
Public insurance
33.2%
Uninsured under 19
9.6%
Language & origin
Language spoken at home (age 5+)
Language
Count
%
English only
533,065
95.7%
Spanish
9,274
1.2%
Other Indo-European
7,333
1.0%
Asian & Pacific Islander
734
0.1%
Other languages
1,130
0.1%
Place of birth & citizenship
Origin
Count
%
Native born (US)
545,657
97.9%
Born in same state
540,548
97.4%
Born in different state
240,452
41.0%
Foreign born
5,109
0.5%
Naturalized citizen
19,304
2.1%
Not a US citizen
7,786
26.8%
Ancestry
Ancestry
Count
%
French
79,695
14.1%
Italian
65,011
11.5%
Arab
27,207
4.8%
Polish
20,469
3.6%
English
9,236
1.6%
Ancestry
Count
%
Dutch
7,427
1.3%
German
2,684
0.5%
Irish
1,372
0.2%
Norwegian
797
0.1%
Technology access
Metric
% of households
Computer access
43.1%
Internet access
93.8%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
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