Farmington, WA · standard
ZIP Code 99128
Whitman County, Washington - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 321
- 2/sq mi Low-density area
- $58,942
- Median income Below-median income area
- $363,500
- Median home value Above-median home value
- 25.5%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Farmington pairs a below-median household income with upper-quartile home values, in a rural, homeowner-dominated area.
- 27th pct
- household income, US ZIPs
- Top 25%
- home value, US ZIPs
- 2
- people per sq mi
- 76%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 99128 against every reporting US ZIP.
ZIP code 99128 is a sparsely populated ZIP (a standard USPS delivery area) in Farmington, Whitman County, Washington, home to just 321 residents across 214.0 square miles, a density of 2 people per square mile, in the Los Angeles time zone.
ZIP 99128 reports a modest median household income of $58,942 (35% below the average Washington ZIP), while per-capita income is $38,137. Unemployment is 13.1%, an important qualifier alongside the household-income figure. Home values sit below the statewide ZIP benchmark: the median is $363,500 (29% below the average Washington ZIP), and median rent is $1,089; owner occupancy is 76.0%.
Educational attainment sits below the national norm: 25.5% of adults hold a bachelor's degree or higher, the median age is 57.1, and the average commute is -. The page also surfaces 2 ZIP codes within roughly 10 miles and 6 more in Whitman County, so 99128 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 99128, Farmington, WA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
321
Population
214.0
Area (sq mi)
2
People / sq mi
Los Angeles
Time Zone
standard
ZIP Type
Who lives in ZIP 99128?
57.1
Median Age
56.4%
Male
43.6%
Female
1.2%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$58,942
Median Household Income
-35% vs state ZIP avg
$38,137
Per Capita Income
17.8%
Poverty Rate
13.1%
Unemployment Rate
How ZIP 99128 ranks among Washington ZIPs
Farmington, WA household income vs. every Washington ZIP code
Median household income among 547 reporting Washington ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$58,942 13th percentile higher than 13% of 547 Washington ZIPs
Each bar is a $20K-wide band; taller bars hold more Washington ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
158housing units
158
Total Housing Units
125
Occupied Units
33
Vacant Units
2.07
Avg Household Size
Occupancy Type
$363,500
Median Home Value
-29% vs state ZIP avg
$1,089
Median Rent
1938
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 5 business establishments in ZIP 99128, employing approximately 18 people with a combined annual payroll of $797,000.
5
Businesses
18
Employees
$797K
Annual Payroll
0
Industry Sectors
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 99128 vs 99033 →
ZIP 99128 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 99033
Tekoa (99033)
895 residents
- 99130
Garfield (99130)
828 residents
- 99128 321
Farmington (99128)
321 residents
What this shows Among its immediate neighbors, ZIP 99128 ranks #3 by population - useful context the national average alone can't give.
ZIP 99128 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 99130
Garfield (99130)
$82,000 median income
- 99128
Farmington (99128)
$58,942 median income
- 99033
Tekoa (99033)
$58,750 median income
What this shows By household income, ZIP 99128 ranks #2 of 3 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 99128, both outside WA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Whitman County
Related Areas
Frequently Asked Questions
What county is ZIP code 99128 in?
ZIP code 99128 (Farmington) is located in Whitman County, Washington. Whitman County contains multiple ZIP codes, see the full list at /counties/whitman-wa.
What is the population of ZIP code 99128?
ZIP code 99128 in Farmington, WA has a population of 321 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 99128?
The median household income in ZIP 99128 is $58,942, which is 23% below the national average of $76,288.
What is the average home value in ZIP 99128?
The median home value in ZIP 99128 is $363,500, which is 31% above the national average of $278,155.
What is the demographic makeup of ZIP 99128?
The largest racial group in ZIP 99128 is White at 94.2%. Hispanic or Latino residents make up 6.9% of the population.
How many businesses are in ZIP code 99128?
ZIP code 99128 has 5 business establishments employing approximately 18 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 99128?
In ZIP code 99128, 67.5% of residents aged 25+ have a high school diploma or higher, and 25.5% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 99128?
In ZIP code 99128, approximately 76.0% of occupied housing units are owner-occupied and 24.0% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 99128?
The poverty rate in ZIP code 99128 is 17.8% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 99128's numbers, next.
- See how ZIP 99128 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Farmington, WA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.