Postal Codes

98851 ZIP Code

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ZIP code 98851 covers Soap Lake, Washington, with a population of about 4,996 and a median household income of $67,009.

Population
4,99634 per square mile
Median age
32.66.1 points below the US average
Median household income
$67,00929% below the Washington median
Poverty rate
19.8%7.4 points above the US average
Typical home value
$306,320up 17% in five years
Median rent
$90246% below the Washington median
Degree or higher
14.6%20.4 points below the US average
Homeownership
63.8%1.2 points below the US average
Time zone
Pacific UTC-08:00observes daylight saving time
Businesses
44

Where 98851 is

Soap Lake, 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

Population4,996
Median age32.6
Family households64.8%
Born outside the US14.9%
Speaks a language other than English at home24.1%
White (non-Hispanic)64.3%
Black (non-Hispanic)0%
Asian (non-Hispanic)0%
Hispanic or Latino26.5%
Veterans7%
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$67,009
Income per person$32,064
Poverty rate19.8%
Households on SNAP or cash assistance24.2%

Household income distribution

Under $10k8.4%
$10–15k8.9%
$15–20k7.0%
$20–25k6.3%
$25–30k1.2%
$30–35k1.4%
$35–40k3.7%
$40–45k4.5%
$45–50k0.4%
$50–60k3.6%
$60–75k13.3%
$75–100k8.4%
$100–125k9.7%
$125–150k7.7%
$150–200k5.5%
$200k or more10.0%

Income as declared to the IRS

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

Tax returns filed1,830
Mean adjusted gross income$59,739
Returns declaring $200,000 or more2.7%
Returns, under $25k31.1%
Returns, $25k–$50k26.8%
Returns, $50k–$75k16.4%
Returns, $75k–$100k9.8%
Returns, $100k–$200k13.1%
Returns, $200k or more2.7%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$240,500
Median gross rent$902
Owner-occupied63.8%
Vacant homes22.4%
Median year built1973

What the homes are

Detached house55%
Attached house1.3%
2 to 4 units8%
5 to 19 units6.9%
Mobile home27.2%
Boat, RV or van1.5%
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$306,320as of 2026-07
Typical home value, 1 yearup 0.3%
Typical home value, 5 yearsup 17%
Typical home value, 10 yearsup 101%
Typical home value since 2000
200920172026$310,907$135,977

$142,164 in 2009 to $306,320 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate8.4%
Bachelor's degree or higher14.6%
High school diploma or higher86%
Works from home12.4%
Drives to work alone73%
Takes public transport0.5%
Commutes 45 minutes or more7.5%
Health

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

Obesity39.3% 5.9 pts above the national average of 33.4%
Diagnosed diabetes14.3% 2.3 pts above the national average of 12%
Currently smokes15.2% 2 pts above the national average of 13.2%
High blood pressure41% 6.9 pts above the national average of 34.1%
Fair or poor general health25.6% 5.3 pts above the national average of 20.3%
No health insurance (18–64)12.5% 1.2 pts above the national average of 11.3%
Depression25.2% 3.3 pts above the national average of 21.9%
No leisure-time physical activity27.1% 1.7 pts above the national average of 25.4%
Arthritis34.7% 9.6 pts above the national average of 25.1%
Binge drinking15.2% 0.8 pts below the national average of 16%
Taking blood pressure medication77.3% 2.6 pts above the national average of 74.7%
Cancer (non-skin)10.4% 2.7 pts above the national average of 7.7%
Current asthma11.8% 1.4 pts above the national average of 10.4%
Coronary heart disease9.6% 3.4 pts above the national average of 6.2%
Routine check-up in past year74% 2.7 pts below the national average of 76.7%
Cholesterol screening82.8% 3.1 pts below the national average of 85.9%
Cognitive disability17.9% 3.1 pts above the national average of 14.8%
Colorectal screening64% same as the national average of 64.3%
COPD9.8% 3.2 pts above the national average of 6.6%
Visited a dentist58.7% 2.6 pts below the national average of 61.3%
Any disability39% 8.3 pts above the national average of 30.7%
Hearing disability10.7% 4 pts above the national average of 6.7%
High cholesterol39.7% 3.5 pts above the national average of 36.2%
Independent living disability10.7% 2.3 pts above the national average of 8.4%
Mammography use69.2% 6.7 pts below the national average of 75.9%
Poor mental health (14+ days)17.9% 1.1 pts above the national average of 16.8%
Mobility disability19.2% 5.2 pts above the national average of 14%
Poor physical health (14+ days)17.7% 4.2 pts above the national average of 13.5%
Self-care disability5.5% 1.5 pts above the national average of 4%
Sleeps under 7 hours31.2% 5.2 pts below the national average of 36.4%
Stroke5% 1.6 pts above the national average of 3.4%
All natural teeth lost16% 3 pts above the national average of 13%
Vision disability6.9% 1.3 pts above the national average of 5.6%
Business and employment

Census ZIP Code Business Patterns 2022

Business establishments44
People employed195
Annual payroll$6,571,000
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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 82.2% of US census tracts
FEMA ratingRelatively Moderate to Relatively High across the 3 census tracts this ZIP code covers
Expected annual loss71.3 out of 100
Community resilience4 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.

Wildfire98.3Relatively High at its worst in this ZIP code
Cold wave93.9Very High at its worst in this ZIP code
Landslide89.7Relatively Moderate at its worst in this ZIP code
Heat wave84.3Relatively High at its worst in this ZIP code
Volcanic activity84.1Very Low at its worst in this ZIP code
River flooding83.1Relatively High at its worst in this ZIP code
Drought81.3Relatively Low at its worst in this ZIP code
Earthquake78.5Relatively Moderate at its worst in this ZIP code
Winter weather77.5Relatively High at its worst in this ZIP code
Hail70.6Relatively Moderate at its worst in this ZIP code
Lightning51.6Relatively Moderate at its worst in this ZIP code
Strong wind47.7Relatively Moderate at its worst in this ZIP code
Avalanche47.5Very Low at its worst in this ZIP code
Tornado17Very Low at its worst in this ZIP code
Ice storm4Very 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$67,009$94,952$78,538
Income per person$32,064$51,493$43,289
Poverty rate19.8%9.9%12.4%
Median home value$240,500$519,800$303,400
Median gross rent$902$1,682$1,348
Homeownership63.8%63.9%65%
Bachelor's degree or higher14.6%38.8%35%
Unemployment rate8.4%5%5.2%
Works from home12.4%17.7%13.5%
Born outside the US14.9%15.1%13.9%
Median age32.638.238.7
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 stationEPHRATA MUNI AP, WA US8.6 km away
Rain in a year8 in

Average high and low by month

January35.6°F / 23.5°F0.91 in rain
February43.2°F / 26.7°F0.64 in rain
March54°F / 31.9°F0.7 in rain
April63.1°F / 38.5°F0.58 in rain
May73.3°F / 47.6°F0.75 in rain
June80°F / 54.4°F0.65 in rain
July89.3°F / 61.3°F0.3 in rain
August87.9°F / 59.4°F0.18 in rain
September78.5°F / 50.6°F0.22 in rain
October62.4°F / 39.3°F0.66 in rain
November45.7°F / 29.5°F0.86 in rain
December35.5°F / 23.6°F1.13 in rain
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 supermarket47% of this ZIP code's area
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarketNone of this ZIP code
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 4 school districts, so the address decides which one, not the ZIP code.

Soap Lake School District48.6% of this ZIP code's land area
Ephrata School District41% of this ZIP code's land area
Wilson Creek School District5.7% of this ZIP code's land area
Coulee-Hartline School District4.5% 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 vulnerability75more vulnerable than 75% of US census tracts
Socioeconomic status56more vulnerable than 56% of US census tracts
Household characteristics87more vulnerable than 87% of US census tracts
Racial and ethnic minority status35more vulnerable than 35% of US census tracts
Housing type and transport84more vulnerable than 84% of US census tracts
Walkability6.3 out of 20Below average
Nearby ZIP codes

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

98823 Ephrata, WA12.3 km away
98853 Stratford, WA16.1 km away
98860 Wilson Creek, WA24.8 km away
99115 Coulee City, WA28.5 km away
98837 Moses Lake, WA31.1 km away
98845 Palisades, WA32.5 km away
98832 Marlin, WA33.1 km away
98848 Quincy, WA34.1 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.

Grant County100% of this ZIP code's land area
Time zonePacific (UTC-08:00 standard)
Daylight saving timeObserved
Land area146.06 sq mi
Water area4.4 sq mi
Population density34 people per sq mi
Latitude, longitude47.3830, -119.4860

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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