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Washington ZIP Codes
Whitman County
Endicott, WA
99125
99125 ZIP Code — Endicott, WA
Whitman County, Washington
ZIP code 99125 is located in
Endicott ,
Washington ,
within Whitman County .
It covers approximately 193.38 square miles and serves a population of
626 residents.
This is a standard ZIP code in the Pacific (PT) timezone,
served by area code 509 .
About ZIP code 99125
The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $156,300. Owner-occupancy sits near the national average at 61%.
Median household income is $50,658. SNAP benefit usage at 26% of households reflects economic stress in the area. 32% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 28 minutes is near the national average.
College attainment at 19% is below the national average, consistent with a trades and production-oriented local economy.
Notable community characteristics include a notable veteran presence at 13% of civilians, above the national average of 7%.
Overall, ZIP code 99125 reflects a community defined by a trades-oriented workforce, a strong veteran community, a significant Social Security-dependent population, and elevated reliance on food assistance.
99125 ZIP code map
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Cities in ZIP code 99125
Below are the cities the US Postal Service accepts for ZIP code 99125. Using any city not on this list may result in mail delivery delays.
Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
626
Population density
3 / sq mi
State FIPS
53
County FIPS
075
Geography
Land area
193.38 sq mi
Water area
0.15 sq mi
Latitude
46.9396
Longitude
-117.7787
Timezone
Pacific (PT)
Area code
509
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
58.3%
55.9%
31.7%
$50k – $100k
28.3%
24.5%
30.6%
$100k – $200k
12.6%
15.6%
27.1%
Over $200k
0.8%
4.0%
10.6%
Demographics & statistics
$50,658
Median household income
$156,300
Median home value
19.4%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 214 34.2% 18 and over 412 65.8% 65 and over 94 15.0% Median age 38.5 years
Race & ethnicity
Black or African American
1.4%
Group Count % White 580 89.5% Two or more races 23 3.5% Hispanic or Latino 22 3.4% Other race 14 2.2% Black or African American 9 1.4%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
58.3%
55.9%
31.7%
$50k – $100k
28.3%
24.5%
30.6%
$100k – $200k
12.6%
15.6%
27.1%
Over $200k
0.8%
4.0%
10.6%
Range % of households Under $10k 0.9% $10k–$15k 3.0% $15k–$25k 12.1% $25k–$35k 15.9% $35k–$50k 15.9% $50k–$75k 26.7% $75k–$100k 14.7% $100k–$150k 3.9% $150k–$200k 5.2% $200k+ 1.7% Median income $50,658
Housing
Housing overview
Metric Value Median home value $156,300 Median rent / month $920 Owner occupied 60.8% Renter occupied 39.2% Vacant 20.0% Single-family detached 92.1% Large apartment buildings 0.0% Mobile homes 7.9% Median rooms 6.2 Avg household size (owned) 2.60
Year built
Era % 2020 or later 0.0% 2010–2019 0.7% 2000–2009 1.4% 1990–1999 3.8% 1980–1989 10.7% 1970–1979 7.9% 1960–1969 6.9% 1950–1959 5.2% 1940–1949 7.9% 1939 or earlier 55.5%
Bedrooms
Size % of units No bedroom (studio) 1.4% 1 bedroom 3.1% 2 bedrooms 25.5% 3 bedrooms 35.2% 4 bedrooms 20.7% 5+ bedrooms 14.1%
Vehicles per household
Vehicles % of households No vehicle 0.4% 1 vehicle 32.3% 2 vehicles 29.7% 3 or more 37.5%
Heating fuel
Fuel type % Utility gas 39.2% Electricity 40.9% Propane / LP gas 4.3% Fuel oil 11.6% Wood 2.6% No fuel used 1.3%
Households & families
Household type Count % Married-couple family 113 48.7% Cohabiting couple 9 3.9% Male householder, no spouse 55 23.7% Female householder, no spouse 55 23.7% Households with children under 18 92 39.7% Households with seniors (65+) 71 30.6% Average household size 2.68
Marital status
Status Male Female Never married 30.9% 14.0% Married 49.0% 56.1% Separated 1.2% 6.1% Widowed 4.8% 4.2% Divorced 14.1% 19.6%
Education
Some college, no degree
27.8%
Graduate / professional
8.7%
Metric % HS diploma or higher 95.7% Bachelor's or higher 19.4%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 5 2.6% Kindergarten 5 2.6% Elementary school 119 62.0% High school 58 30.2% College / grad school 5 2.6%
Employment
Industry of employment
Education & healthcare
20.3%
Agriculture & mining
17.6%
Professional & management
7.0%
Transportation & utilities
5.3%
Arts, food & hospitality
4.0%
Public administration
4.0%
Occupation
Category % Management, business & arts 27.3% Service 18.5% Sales & office 10.6% Natural resources & construction 27.3% Production & transportation 16.3%
Employment type
Type % Private sector 64.3% Government 18.9% Self-employed 16.7% Unpaid family workers 0.0%
Commute
Method % Drive alone 77.1% Carpool 8.4% Public transit 0.0% Walk 4.8% Work from home 6.6% Other means 3.1% Avg commute (minutes) 27.7
Poverty
Married-couple families
1.8%
Female-led households
20.0%
Income support
Source % of households Social Security 32.3% Retirement income 15.1% Supplemental Security 12.1% Cash public assistance 3.9% Food stamps / SNAP 26.3%
Health indicators
Condition % Obesity 33.8% High blood pressure 38.2% High cholesterol 38.0% Diabetes 11.5% Heart disease 8.8% Stroke 4.1% Asthma 11.0% Arthritis 32.0% Kidney disease 3.9% Pulmonary disease 9.0% Cancer 9.1%
Behavior / access % Smoking 16.5% Binge drinking 14.9% No physical activity 21.7% Less than 7 hrs sleep 28.0% Depression 26.2% Fair or poor health 16.8% Poor mental health 14.4% Poor physical health 13.2% No health insurance 9.8% Visited doctor (checkup) 73.3% Visited dentist 68.0% Cholesterol screening 90.9% Teeth loss 12.9%
Veterans & disability
Veterans Count % Civilian veterans 55 13.3%
Disability % Any disability 14.7% Under 18 4.7% 18–64 years 17.6% 65 and over 27.7%
Health insurance coverage
Type % Private insurance 41.1% Public insurance 63.4% No insurance 4.6% Uninsured under 19 5.9%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 612 97.8% Spanish 0 0.0% Other Indo-European 0 0.0% Asian & Pacific Islander 0 0.0% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 617 98.6% Born in same state 617 98.6% Born in different state 377 60.2% Foreign born 0 0.0% Naturalized citizen 9 1.4% Not a US citizen 6 66.7%
Ancestry
Ancestry Count % Italian 137 21.9% French 118 18.8% English 39 6.2%
Ancestry Count % Polish 39 6.2% Arab 24 3.8% German 2 0.3%
Technology access
Metric % of households Computer access 37.1% Internet access 96.1%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 99125
What city is ZIP code 99125 in?
ZIP code 99125 is primarily assigned to Endicott, Washington.
What county is ZIP code 99125 in?
ZIP code 99125 falls within Whitman County, Washington.
Is ZIP code 99125 family-oriented?
34% of residents in ZIP code 99125 are under 18, reflecting a younger, family-oriented community.
Does ZIP code 99125 have a large veteran population?
13% of civilians in ZIP code 99125 are veterans, above the national average of ~7%.
What is the typical home value in ZIP code 99125?
The median home value in ZIP code 99125 is $156,300.
What is the population of ZIP code 99125?
ZIP code 99125 has an estimated population of 626 residents, with a density of 3 people per square mile.
What timezone is ZIP code 99125 in?
ZIP code 99125 observes the PST timezone.
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