ZIP code
99115
Coulee City, WA
99115 covers Coulee City in Grant County, with 1,306 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 99115. Methodology
ZIP code map of 99115

About ZIP code 99115
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 99115. Not ACS. Methodology
People in 99115
Race
- White1,122
- Black or African American5
- American Indian or Alaska Native11
- Asian9
- Other race24
- Two or more races56
Hispanic or Latino (any race): 58
Age
- Under 10123
- 10 to 19144
- 20 to 2975
- 30 to 39121
- 40 to 49106
- 50 to 59183
- 60 to 69214
- 70 to 79195
- 80 and older66
Income and housing in 99115
Education
- High school graduate89.6%
- Bachelor's degree20.3%
- Graduate degree4.3%
Places covering 99115
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- Coulee City44.7%
- Banks Lake South19.1%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Grant County83.5%
- Douglas County16.5%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
36.2% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 99115
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 946 | |
| 2006 | 912 | |
| 2007 | 1,054 | |
| 2008 | 929 | |
| 2009 | 943 | |
| 2010 | 936 | |
| 2011 | 1,015 | 952 |
| 2012 | 1,066 | 960 |
| 2013 | 1,119 | 960 |
| 2014 | 1,309 | 970 |
| 2015 | 1,318 | 940 |
| 2016 | 1,303 | 920 |
| 2017 | 1,300 | 940 |
| 2018 | 1,268 | 990 |
| 2019 | 1,060 | 1,000 |
| 2020 | 1,298 | 1,000 |
| 2021 | 1,261 | 1,040 |
| 2022 | 1,224 | 1,000 |
| 2023 | 1,306 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 99115
12 nearest ZIP centroids (any distance)
- 99135Hartline13.4 miPop 441 · Income $86,667
- 98853Stratford15.0 miPop 0 · Income —
- 98830Mansfield16.0 miPop 564 · Income $80,313
- 98851Soap Lake18.2 miPop 4,996 · Income $67,009
- 98860Wilson Creek19.0 miPop 245 · Income $51,250
- 99123Electric City21.0 miPop 952 · Income $78,942
- 99103Almira21.5 miPop 534 · Income $61,200
- 98858Waterville23.8 miPop 1,851 · Income $76,667
- 98813Bridgeport25.5 miPop 3,233 · Income $52,500
- 99133Grand Coulee25.8 miPop 1,341 · Income $49,625
- 98823Ephrata26.1 miPop 12,661 · Income $77,361
- 98832Marlin28.8 miPop 158 · Income $55,625
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 99115, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 99115 FAQ
- What city is ZIP code 99115 in?
- 99115 is in Coulee City, WA.
- What county is 99115 in?
- 99115 is in Grant County.
- What is the median household income in 99115?
- The median household income in 99115 is $49,519.
- Which ZIP codes are near 99115?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 99115.