ZIP Code 99176 - Thornton Washington
Overview
ZIP Code 99176 is located in Thornton Washington. 99176 is entirely within Whitman County. Regionally, 99176 is located in the Spokane Area.
ZIP Code 99176 Quick Stats
| ZIP Code Name | Thornton |
| Primary County | Whitman County |
| ZIP Code Type | Standard |
| Population (2022) | 136 |
| Area Code(s) | 509 |
| Current Time | PDT |
ZIP Code 99176 Map
99176 Demographics
99176 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Washington. The majority race/ethnicity residing in 99176 is White. The current unemployment level in 99176 is 5.1%.
| Population | 136 |
| Population Growth Rate | -12.66% |
| Population Density | 4 People per Square Mile |
| Total Households | 61 |
| Median Household Income (2021) | $64,000 |
| Current Unemployment Rate (May 2026) | 5.1% |
| Sales Tax Rate (2025) | 7.9% |
| Majority Race/Ethnicity | White - 91.22% |
99176 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 187 | 91.22% |
| Black | 0 | 0% |
| Hispanic | 18 | 8.78% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
99176 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 10 | 9.26% |
| Bachelor Degree | 22 | 20.37% |
| High School Diploma | 31 | 28.7% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 0 | 0% |
| 1 or More Years of College | 28 | 25.93% |
| Associates Degree | 11 | 10.19% |
| Masters Degree | 3 | 2.78% |
| Professional Degree | 3 | 2.78% |
| Doctorate Degree | 0 | 0% |
99176 Geography
| Coordinates | 47.09891129, -117.37692261 |
| Adjacent ZIP Codes | |
| Region | Spokane Area |
| Metropolitan/Micropolitan Stat Area | Pullman, WA |
| Time Zone | Pacific Daylight Time |
| IANA Timezone | America/Los_Angeles |
| Area | 35 Square Miles |
99176 Schools
| School Districts in 99176 | |
| Elementary Schools in 99176 | |
| High Schools in 99176 |
99176 Weather and Climate Data
| Plant Hardiness Zone | Zone 6b: -5F to 0F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | September 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dsb - Humid Continental Climate - Dry Cool Summer | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 10h - Palouse Hills | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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