ZIP Code Tabulation Area · Washington

ZIP Code 99170: Whitman County, WA

ZIP Code 99170 (Whitman County, Washington) has an estimated 926 residents in 423 households. The median household income is $58,750, the median home value is $238,300 and the median gross rent is $825/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Total population

926

Margin of error ±168

Median household income

$58,750

Margin of error ±$15,557

Median home value

$238,300

Margin of error ±$48,774

Median gross rent

$825/mo

Margin of error ±$404

Median age

50.5 yrs

Margin of error ±8.9 yrs

Mean travel time to work

30.9 min

Margin of error ±11.8 min

How ZIP 99170 compares with Washington and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 9917050.5 yrsWashington38.3 yrsUnited States38.9 yrs

Median household income

ZIP 99170$58,750Washington$98,141United States$80,734

Per capita income

ZIP 99170$35,231Washington$53,744United States$44,673

Poverty rate

ZIP 9917012.3%Washington9.9%United States12.5%

Unemployment rate

ZIP 991706.1%Washington5.1%United States5.2%

Bachelor's degree or higher

ZIP 9917017.8%Washington39.6%United States35.7%

Median home value

ZIP 99170$238,300Washington$564,600United States$332,700

Median gross rent

ZIP 99170$825/moWashington$1,760/moUnited States$1,413/mo

Owner-occupied homes

ZIP 9917083.9%Washington63.8%United States65.2%

Mean travel time to work

ZIP 9917030.9 minWashington26.6 minUnited States26.4 min

Worked from home

ZIP 9917011.3%Washington19.8%United States15.1%

All figures for ZIP 99170

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 99170 — ACS 2020–2024 5-year estimates
MeasureZIP 99170Margin of errorWashingtonUnited States
Total population926±1687,816,116334,922,499
Median age50.5 yrs±8.9 yrs38.3 yrs38.9 yrs
Households423±753,064,820129,227,496
Median household income$58,750±$15,557$98,141$80,734
Per capita income$35,231±$5,091$53,744$44,673
Poverty rate12.3%±7.3 pts9.9%12.5%
Unemployment rate6.1%±6.3 pts5.1%5.2%
Bachelor's degree or higher17.8%±4.6 pts39.6%35.7%
Median home value$238,300±$48,774$564,600$332,700
Median gross rent$825/mo±$404$1,760/mo$1,413/mo
Owner-occupied homes83.9%±7.8 pts63.8%65.2%
Mean travel time to work30.9 min±11.8 min26.6 min26.4 min
Worked from home11.3%±7.0 pts19.8%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 99170
GroupZIP 99170WashingtonUnited States
White alone, not Hispanic or Latino84.7%63.1%57.4%
Black or African American alone, not Hispanic or Latino1.0%3.8%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino1.5%0.8%0.5%
Asian alone, not Hispanic or Latino0.0%9.7%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.4%0.7%0.2%
Some other race alone, not Hispanic or Latino0.0%0.6%0.6%
Two or more races, not Hispanic or Latino6.6%6.8%4.3%
Hispanic or Latino (of any race)5.8%14.4%19.3%

Where ZIP 99170 is

State
Washington
Main county
Whitman County— also overlaps Spokane County
Largest overlapping place
Rosalia (less than 1% of the ZIP's land area)
Land area
173.10 sq mi· about 5 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Whitman County

99017 Whitman County, WA99033 Whitman County, WA99102 Albion, WA99111 Whitman County, WA99113 Whitman County, WA99125 Whitman County, WA99128 Whitman County, WA99130 Whitman County, WA99136 Whitman County, WA99143 Whitman County, WA99149 Malden, WA99158 Whitman County, WA99161 Whitman County, WA99163 Whitman County, WA99171 Whitman County, WA99174 Steptoe, WA99176 Whitman County, WA99179 Whitman County, WA99333 Whitman County, WA

See every ZIP code in Washington, or compare ZIP 99170 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.