Residential delivery area · Washington
ZIP Code 99324: College Place, WA
ZIP code 99324 is in College Place, Washington, entirely in Walla Walla County (Census 2020 ZIP-county file). About 10,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $62,839 (Census Bureau, ACS 2020-2024). By Census place, 87% of its land lies in College Place, and 1% in smaller places; 12% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- College Place · its only residential ZIP
- County
- Walla Walla County
- Census places
- College Place
- Metro area
- Walla Walla, WA
- House district
- WA-5 119th Congress
- State
- Washington
- Time zone
- Pacific
- Land area
- 2.8 sq mi · 3,658 people per sq mi
Where is ZIP code 99324?
99324 centers on 46.044°, -118.385° and covers 2.8 square miles of land. It borders 1 ZIP code: 99362.
The map draws ZIP code areas only. For the streets inside 99324, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 99324 compare with the rest of Walla Walla County?
| Measure | 99324 | In Walla Walla County | In WA |
|---|---|---|---|
| People (ACS 2020-2024) | 10,137 | 2nd of 8 | 230th of 605 |
| Median household income | $63k | 6th of 6 | 327th of 363 |
| Median home value | $369k | 4th of 5 | 314th of 392 |
Its median household income is higher than in 35% of U.S. residential ZIP codes, and it is denser than 91% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 99324?
The 2020 Census counted 10,226 people in 99324; the ACS, which samples households over 2020-2024, estimates 10,137. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 10,137
- 2020 Census count
- 10,226
- Households
- 3,552
- Median age
- 33.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 99324?
Of the 10,137 people the ACS estimates in 99324, 20.7% are under 18 and 22.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (71.0%), then Hispanic or Latino (19.2%).
- Under 1820.7%
- 18 to 6457.3%
- 65 and older22.0%
- White, not Hispanic71.0%
- Hispanic or Latino19.2%
- Other or two or more5.8%
- Asian, not Hispanic3.1%
- Black, not Hispanic0.9%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 99324 earn?
Median household income is $62,839 (ACS 2020-2024), the 6th highest of the 6 ranked ZIP codes in Walla Walla County.
- Median household income
- $62,839±$10,262
- Income per person
- $34,308
- Below the poverty line
- 10.6%
- Unemployed (of the labor force)
- 6.1%
- Adults 25+ with a bachelor's degree
- 36.5%
- Adjusted gross income per tax return, 2022
- $65,1404,340 returns; wages 72% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 99324?
FHFA's house price index for 99324, built from repeat sales and appraisals of the same homes, rose 99% from 2015 to 2025 and rose 40% from 2020 to 2025, and moved +2.9% in 2025.
- Median home value (owners' estimate)
- $368,500
- Median gross rent
- $1,188
- Homes owned by their occupants
- 64.5%
- Housing units
- 3,819
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 99324?
122 business establishments had a location in this ZIP code in 2023, 12 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance23
- Retail trade19
- Construction13
- Other services (except public administration)12
- Accommodation and food services11
- Real estate and rental and leasing8
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 99324?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 99362 | Walla Walla | 42,853 | $73k | 5.2 mi |
| 97862 | Milton Freewater, OR | 12,313 | $55k | 9.0 mi (near) |
| 99329 | Dixie | 127 | – | 13.2 mi (near) |
| 99360 | Touchet | 1,350 | $93k | 13.9 mi (near) |
| 97813 | Athena, OR | 1,508 | $76k | 14.8 mi (near) |
| 97886 | Weston, OR | 1,221 | $93k | 17.5 mi (near) |
| 99361 | Waitsburg | 1,992 | $91k | 17.7 mi (near) |
| 97835 | Helix, OR | 608 | $132k | 21.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.