ZIP code
99128
Farmington, WA
99128 covers Farmington in Whitman County, with 248 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 99128. Methodology
ZIP code map of 99128

About ZIP code 99128
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 99128. Not ACS. Methodology
People in 99128
Race
- White291
- Black or African American4
- American Indian or Alaska Native4
- Asian1
- Other race1
- Two or more races14
Hispanic or Latino (any race): 10
Age
- Under 1040
- 10 to 1927
- 20 to 2922
- 30 to 3930
- 40 to 4928
- 50 to 5947
- 60 to 6969
- 70 to 7929
- 80 and older23
Income and housing in 99128
Education
- High school graduate96.5%
- Bachelor's degree25.6%
- Graduate degree7.0%
Places covering 99128
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.
- Farmington41.6%
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.
- Whitman County88.9%
- Latah County, ID11.1%
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
47.3% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 99128
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 322 | |
| 2006 | 325 | |
| 2007 | 331 | |
| 2009 | 249 | |
| 2010 | 268 | |
| 2011 | 482 | 254 |
| 2012 | 468 | 260 |
| 2013 | 396 | 280 |
| 2014 | 368 | 260 |
| 2015 | 333 | 240 |
| 2016 | 209 | 270 |
| 2017 | 243 | 290 |
| 2018 | 316 | 270 |
| 2019 | 337 | 250 |
| 2020 | 371 | 260 |
| 2021 | 291 | 250 |
| 2022 | 289 | 240 |
| 2023 | 248 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 99128
12 nearest ZIP centroids (any distance)
- 99104Belmont3.9 miPop — · Income —
- 83824Desmet6.5 miPop 398 · Income —
- 99158Oakesdale7.8 miPop 601 · Income $75,625
- 99130Garfield8.4 miPop 847 · Income $63,750
- 99033Tekoa9.2 miPop 826 · Income $56,667
- 83870Tensed11.1 miPop 340 · Income $59,844
- 83855Potlatch11.6 miPop 1,701 · Income $77,813
- 99161Palouse13.8 miPop 1,478 · Income $90,750
- 99018Latah13.8 miPop 308 · Income $51,000
- 99174Steptoe14.4 miPop 70 · Income $48,929
- 99176Thornton15.6 miPop 132 · Income $81,250
- 83851Plummer16.1 miPop 1,925 · Income $55,917
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 99128, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 99128 FAQ
- What city is ZIP code 99128 in?
- 99128 is in Farmington, WA.
- What county is 99128 in?
- 99128 is in Whitman County.
- What is the median household income in 99128?
- The median household income in 99128 is $58,194.
- Does ZIP code 99128 cross state lines?
- Yes. 99128 is listed in WA, ID. This page is the canonical listing for Farmington, WA.
- Which ZIP codes are near 99128?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 99128.