Postal Codes

99111 ZIP Code

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ZIP code 99111 covers Colfax, Washington, with a population of about 4,049 and a median household income of $66,333.

Population
4,04913 per square mile
Median age
41.83.1 points above the US average
Median household income
$66,33330% below the Washington median
Poverty rate
9%3.4 points below the US average
Typical home value
$321,679up 17.6% in five years
Median rent
$98342% below the Washington median
Degree or higher
29.6%5.4 points below the US average
Homeownership
72.9%7.9 points above the US average
Time zone
Pacific UTC-08:00observes daylight saving time
Businesses
135

Where 99111 is

Colfax, Washington — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population4,049
Median age41.8
Family households62%
Born outside the US1.7%
Speaks a language other than English at home4.1%
White (non-Hispanic)82.4%
Black (non-Hispanic)1.2%
Asian (non-Hispanic)0.8%
Hispanic or Latino8.1%
Veterans9.9%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$66,333
Income per person$37,310
Poverty rate9%
Households on SNAP or cash assistance16%

Household income distribution

Under $10k5.5%
$10–15k2.5%
$15–20k3.1%
$20–25k5.2%
$25–30k2.0%
$30–35k2.4%
$35–40k5.4%
$40–45k6.0%
$45–50k2.2%
$50–60k7.4%
$60–75k15.7%
$75–100k11.0%
$100–125k10.8%
$125–150k6.4%
$150–200k7.1%
$200k or more7.2%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed1,900
Mean adjusted gross income$79,341
Returns declaring $200,000 or more5.8%
Returns, under $25k22.1%
Returns, $25k–$50k22.6%
Returns, $50k–$75k17.4%
Returns, $75k–$100k11.1%
Returns, $100k–$200k21.1%
Returns, $200k or more5.8%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$264,300
Median gross rent$983
Rent as a share of household income34.1%
Owner-occupied72.9%
Vacant homes11.6%
Median year built1950

What the homes are

Detached house68.4%
Attached house0.6%
2 to 4 units7.5%
5 to 19 units7%
20 or more units6.4%
Mobile home10.2%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$321,679as of 2026-07
Typical home value, 1 yearup 0.2%
Typical home value, 5 yearsup 17.6%
Typical home value, 10 yearsup 75.4%
Typical home value since 2000
200620162026$324,191$153,651

$173,833 in 2006 to $321,679 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate3.2%
Bachelor's degree or higher29.6%
High school diploma or higher92.6%
Works from home6.9%
Drives to work alone79.9%
Takes public transport0%
Commutes 45 minutes or more8.6%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity30.7% 2.7 pts below the national average of 33.4%
Diagnosed diabetes10.7% 1.3 pts below the national average of 12%
Currently smokes11.4% 1.8 pts below the national average of 13.2%
High blood pressure34.4% same as the national average of 34.1%
Fair or poor general health17.4% 2.9 pts below the national average of 20.3%
No health insurance (18–64)6.7% 4.6 pts below the national average of 11.3%
Depression25.8% 3.9 pts above the national average of 21.9%
No leisure-time physical activity18.1% 7.3 pts below the national average of 25.4%
Arthritis30% 4.9 pts above the national average of 25.1%
Binge drinking15.2% 0.8 pts below the national average of 16%
Taking blood pressure medication77.1% 2.4 pts above the national average of 74.7%
Cancer (non-skin)11.1% 3.4 pts above the national average of 7.7%
Current asthma11.9% 1.5 pts above the national average of 10.4%
Coronary heart disease7.2% 1 pts above the national average of 6.2%
Routine check-up in past year73.8% 2.9 pts below the national average of 76.7%
Cholesterol screening85.3% 0.6 pts below the national average of 85.9%
Cognitive disability14.4% same as the national average of 14.8%
Colorectal screening69.5% 5.2 pts above the national average of 64.3%
COPD7% same as the national average of 6.6%
Visited a dentist70.1% 8.8 pts above the national average of 61.3%
Any disability31.9% 1.2 pts above the national average of 30.7%
Hearing disability8.7% 2 pts above the national average of 6.7%
High cholesterol36.8% 0.6 pts above the national average of 36.2%
Independent living disability8.3% same as the national average of 8.4%
Mammography use72.8% 3.1 pts below the national average of 75.9%
Poor mental health (14+ days)16.9% same as the national average of 16.8%
Mobility disability14.1% same as the national average of 14%
Poor physical health (14+ days)14.5% 1 pts above the national average of 13.5%
Self-care disability3.8% same as the national average of 4%
Sleeps under 7 hours27.6% 8.8 pts below the national average of 36.4%
Stroke3.9% 0.5 pts above the national average of 3.4%
All natural teeth lost11% 2 pts below the national average of 13%
Vision disability4.5% 1.1 pts below the national average of 5.6%
Business and employment

Census ZIP Code Business Patterns 2022

Business establishments135
People employed1,321
Annual payroll$72,664,000
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Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 60% of US census tracts
FEMA ratingRelatively Low to Relatively Moderate across the 6 census tracts this ZIP code covers
Expected annual loss61.7 out of 100
Community resilience39.5 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Landslide98.3Relatively Moderate at its worst in this ZIP code
River flooding82Relatively High at its worst in this ZIP code
Wildfire81.8Relatively Moderate at its worst in this ZIP code
Cold wave78.8Relatively High at its worst in this ZIP code
Drought78Relatively Low at its worst in this ZIP code
Hail73.3Relatively Moderate at its worst in this ZIP code
Ice storm67.6Relatively Moderate at its worst in this ZIP code
Heat wave58.1Relatively Moderate at its worst in this ZIP code
Earthquake56.9Relatively Low at its worst in this ZIP code
Winter weather49.1Relatively Moderate at its worst in this ZIP code
Strong wind47.2Relatively Moderate at its worst in this ZIP code
Avalanche34.2Very Low at its worst in this ZIP code
Tornado14.3Very Low at its worst in this ZIP code
Lightning11.4Very Low at its worst in this ZIP code
Compared with Washington and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPWashingtonUnited States
Median household income$66,333$94,952$78,538
Income per person$37,310$51,493$43,289
Poverty rate9%9.9%12.4%
Median home value$264,300$519,800$303,400
Median gross rent$983$1,682$1,348
Homeownership72.9%63.9%65%
Bachelor's degree or higher29.6%38.8%35%
Unemployment rate3.2%5%5.2%
Works from home6.9%17.7%13.5%
Born outside the US1.7%15.1%13.9%
Median age41.838.238.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationPULLMAN 2 NW, WA US19.1 km away
Rain in a year20 in
Snow in a year33 in

Average high and low by month

January37.7°F / 25.6°F2.67 in rain, 9.6 in snow
February42°F / 27°F1.94 in rain, 4.8 in snow
March49.5°F / 31.1°F2.05 in rain, 2.5 in snow
April57.1°F / 35.4°F1.96 in rain, 0.7 in snow
May66.4°F / 41.9°F1.81 in rain, 0.1 in snow
June72.6°F / 46.4°F1.22 in rain
July84.1°F / 50.3°F0.44 in rain
August85.3°F / 50.2°F0.48 in rain
September75.8°F / 44.3°F0.65 in rain
October60.7°F / 36.3°F1.8 in rain, 0.1 in snow
November45.5°F / 30.6°F2.62 in rain, 4.6 in snow
December36.9°F / 25.1°F2.77 in rain, 10.3 in snow
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarket9% of this ZIP code's area
Far from a supermarket46% of this ZIP code's area
No vehicle and far from a supermarket46% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 5 school districts, so the address decides which one, not the ZIP code.

Colfax School District76.6% of this ZIP code's land area
Steptoe School District10.7% of this ZIP code's land area
Endicott School District8.9% of this ZIP code's land area
St. John School District2.6% of this ZIP code's land area
Pullman School District1.3% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability44more vulnerable than 44% of US census tracts
Socioeconomic status30more vulnerable than 30% of US census tracts
Household characteristics55more vulnerable than 55% of US census tracts
Racial and ethnic minority status24more vulnerable than 24% of US census tracts
Housing type and transport66more vulnerable than 66% of US census tracts
Walkability5.4 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

99102 Albion, WA13.2 km away
99174 Steptoe, WA14 km away
99130 Garfield, WA20.7 km away
99161 Palouse, WA21.6 km away
99164 Pullman, WA21.8 km away
99163 Pullman, WA21.9 km away
99104 Belmont, WA26.4 km away
99171 Saint John, WA26.8 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Whitman County100% of this ZIP code's land area
Time zonePacific (UTC-08:00 standard)
Daylight saving timeObserved
Land area306.99 sq mi
Water area0.1 sq mi
Population density13 people per sq mi
Latitude, longitude46.8800, -117.3670

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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