99324 ZIP Code — College Place, WA
Walla Walla County, Washington
ZIP code 99324 is located in College Place, Washington, within Walla Walla County. It covers approximately 2.77 square miles and serves a population of 10,076 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 509.
About ZIP code 99324
The housing stock consists of a mix of housing types. Most homes were built in the 1970s, giving the area an established character. Median home value is $303,700. Owner-occupancy sits near the national average at 66%.
Median household income is $63,628. 40% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 12 minutes is near the national average.
Educational attainment is near the national average, with 40% of residents holding a bachelor's degree or higher.
10,076
population
2.77
sq mi land
Standard
ZIP type
Pacific (PT)
timezone
99324 ZIP code map
Cities in ZIP code 99324
Below are the cities the US Postal Service accepts for ZIP code 99324. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| College Place | Preferred |
Nearby ZIP codes
99362 Walla Walla (8.8 mi)
97862 Milton Freewater (11.8 mi)
97813 Athena (12.8 mi)
99329 Dixie (13.5 mi)
99360 Touchet (15.7 mi)
97886 Weston (17.8 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 10,076 |
| Population density | 3,638 / sq mi |
| State FIPS | 53 |
| County FIPS | 071 |
| Geography | |
|---|---|
| Land area | 2.77 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 46.0425 |
| Longitude | -118.4081 |
| Timezone | Pacific (PT) |
| Area code | 509 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 47.8% | 42.4% | 31.7% |
| $50k – $100k | 26.4% | 31.2% | 30.6% |
| $100k – $200k | 22.5% | 21.8% | 27.1% |
| Over $200k | 3.3% | 4.6% | 10.6% |
Demographics & statistics
10,076
Population
3,638
People per sq mi
33.6
Median age
$63,628
Median household income
$32,057
Per capita income
$303,700
Median home value
$1,032
Median monthly rent
66.4%
Home ownership
11.0%
Poverty rate
5.4%
Unemployment
2,663
Housing units
39.5%
Bachelor's or higher
Age distribution
Male
Female
284
Under 5
327
244
5–9
281
243
10–14
281
489
15–19
564
629
20–24
725
516
25–34
595
531
35–44
612
322
45–54
371
116
55–59
134
313
60–64
360
590
65–74
680
253
75–84
292
151
85+
173
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 2,146 | 21.3% |
| 18 and over | 7,930 | 78.7% |
| 65 and over | 2,139 | 21.2% |
| Median age | 33.6 years | |
Race & ethnicity
White
74.6%
Hispanic or Latino
8.8%
Two or more races
7%
Other race
6.5%
Asian
2%
American Indian / Alaska Native
0.4%
Black or African American
0.4%
Native Hawaiian / Pacific Islander
0.2%
| Group | Count | % |
|---|---|---|
| White | 8,242 | 74.6% |
| Hispanic or Latino | 967 | 8.8% |
| Two or more races | 776 | 7% |
| Other race | 723 | 6.5% |
| Asian | 219 | 2% |
| American Indian / Alaska Native | 49 | 0.4% |
| Black or African American | 40 | 0.4% |
| Native Hawaiian / Pacific Islander | 27 | 0.2% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 47.8% | 42.4% | 31.7% |
| $50k – $100k | 26.4% | 31.2% | 30.6% |
| $100k – $200k | 22.5% | 21.8% | 27.1% |
| Over $200k | 3.3% | 4.6% | 10.6% |
Under $10k
2.2%
$10k–$15k
5.7%
$15k–$25k
9.0%
$25k–$35k
14.6%
$35k–$50k
5.2%
$50k–$75k
19.8%
$75k–$100k
13.0%
$100k–$150k
16.8%
$150k–$200k
9.2%
$200k+
4.5%
| Range | % of households |
|---|---|
| Under $10k | 2.2% |
| $10k–$15k | 5.7% |
| $15k–$25k | 9.0% |
| $25k–$35k | 14.6% |
| $35k–$50k | 5.2% |
| $50k–$75k | 19.8% |
| $75k–$100k | 13.0% |
| $100k–$150k | 16.8% |
| $150k–$200k | 9.2% |
| $200k+ | 4.5% |
| Median income | $63,628 |
Housing
Home values
Under $50k
1.4%
$50k–$100k
10.1%
$100k–$150k
2.8%
$150k–$200k
8.7%
$200k–$300k
26.0%
$300k–$500k
39.9%
$500k–$1M
11.2%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $303,700 |
| Median rent / month | $1,032 |
| Owner occupied | 66.4% |
| Renter occupied | 33.6% |
| Vacant | 8.9% |
| Single-family detached | 60.2% |
| Large apartment buildings | 0.9% |
| Mobile homes | 8.3% |
| Median rooms | 5.1 |
| Avg household size (owned) | 2.77 |
Year built
| Era | % |
|---|---|
| 2020 or later | 1.8% |
| 2010–2019 | 13.7% |
| 2000–2009 | 15.4% |
| 1990–1999 | 14.7% |
| 1980–1989 | 11.9% |
| 1970–1979 | 16.9% |
| 1960–1969 | 12.0% |
| 1950–1959 | 3.0% |
| 1940–1949 | 2.6% |
| 1939 or earlier | 7.8% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.8% |
| 1 bedroom | 7.2% |
| 2 bedrooms | 39.4% |
| 3 bedrooms | 34.9% |
| 4 bedrooms | 14.4% |
| 5+ bedrooms | 3.4% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 2.3% |
| 1 vehicle | 33.3% |
| 2 vehicles | 41.5% |
| 3 or more | 23.0% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 37.7% |
| Electricity | 57.3% |
| Propane / LP gas | 3.0% |
| Wood | 1.9% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 1,824 | 52.2% |
| Cohabiting couple | 230 | 6.6% |
| Male householder, no spouse | 486 | 13.9% |
| Female householder, no spouse | 953 | 27.3% |
| Households with children under 18 | 1,106 | 31.7% |
| Households with seniors (65+) | 1,367 | 39.1% |
| Average household size | 2.55 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 39.1% | 39.0% |
| Married | 52.9% | 41.6% |
| Separated | 1.4% | 2.3% |
| Widowed | 1.7% | 5.9% |
| Divorced | 4.9% | 11.2% |
Education
Less than 9th grade
2.6%
Some HS, no diploma
8.5%
HS graduate
14.9%
Some college, no degree
23.2%
Associate's degree
11.3%
Bachelor's degree
20.9%
Graduate / professional
18.6%
| Metric | % |
|---|---|
| HS diploma or higher | 88.9% |
| Bachelor's or higher | 39.5% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 172 | 5.3% |
| Kindergarten | 29 | 0.9% |
| Elementary school | 913 | 28.3% |
| High school | 484 | 15.0% |
| College / grad school | 1,628 | 50.5% |
Employment
Industry of employment
Education & healthcare
38.0%
Retail trade
13.3%
Public administration
9.1%
Professional & management
8.5%
Arts, food & hospitality
7.7%
Manufacturing
5.3%
Other services
5.0%
Transportation & utilities
4.0%
Finance & real estate
3.5%
Wholesale trade
2.3%
Agriculture & mining
1.6%
Information
1.3%
Construction
0.5%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 39.5% |
| Service | 23.3% |
| Sales & office | 25.6% |
| Natural resources & construction | 3.2% |
| Production & transportation | 8.4% |
Employment type
| Type | % |
|---|---|
| Private sector | 77.9% |
| Government | 18.0% |
| Self-employed | 4.1% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 71.9% |
| Carpool | 6.8% |
| Public transit | 0.7% |
| Walk | 9.6% |
| Work from home | 10.1% |
| Other means | 0.9% |
| Avg commute (minutes) | 12.2 |
Poverty
All people
11.0%
Under 18 years
12.0%
18 and over
10.7%
Married-couple families
3.9%
Female-led households
34.5%
Income support
| Source | % of households |
|---|---|
| Social Security | 39.7% |
| Retirement income | 31.2% |
| Supplemental Security | 4.3% |
| Cash public assistance | 3.4% |
| Food stamps / SNAP | 8.4% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 25.4% |
| High blood pressure | 28.2% |
| High cholesterol | 29.3% |
| Diabetes | 8.4% |
| Heart disease | 6.2% |
| Stroke | 2.9% |
| Asthma | 10.7% |
| Arthritis | 23.6% |
| Kidney disease | 2.9% |
| Pulmonary disease | 5.8% |
| Cancer | 6.9% |
| Behavior / access | % |
|---|---|
| Smoking | 12.2% |
| Binge drinking | 16.8% |
| No physical activity | 17.5% |
| Less than 7 hrs sleep | 25.5% |
| Depression | 25.8% |
| Fair or poor health | 12.5% |
| Poor mental health | 15.3% |
| Poor physical health | 9.8% |
| No health insurance | 11.9% |
| Visited doctor (checkup) | 69.3% |
| Visited dentist | 68.5% |
| Cholesterol screening | 85.3% |
| Teeth loss | 11.6% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 713 | 9.0% |
| Disability | % |
|---|---|
| Any disability | 16.4% |
| Under 18 | 6.5% |
| 18–64 years | 13.9% |
| 65 and over | 34.0% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 70.8% |
| Public insurance | 44.2% |
| No insurance | 4.3% |
| Uninsured under 19 | 1.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 9,465 | 93.9% |
| Spanish | 509 | 5.4% |
| Other Indo-European | 395 | 4.2% |
| Asian & Pacific Islander | 45 | 0.5% |
| Other languages | 69 | 0.7% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 9,206 | 91.4% |
| Born in same state | 9,061 | 89.9% |
| Born in different state | 4,751 | 47.2% |
| Foreign born | 145 | 1.4% |
| Naturalized citizen | 870 | 8.6% |
| Not a US citizen | 565 | 64.9% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| French | 1,444 | 14.3% |
| Italian | 900 | 8.9% |
| Arab | 556 | 5.5% |
| Polish | 535 | 5.3% |
| Ancestry | Count | % |
|---|---|---|
| English | 225 | 2.2% |
| Dutch | 94 | 0.9% |
| Irish | 29 | 0.3% |
| German | 26 | 0.3% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 34.7% |
| Internet access | 96.3% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 99324
What city is ZIP code 99324 in?
ZIP code 99324 is primarily assigned to College Place, Washington.
What county is ZIP code 99324 in?
ZIP code 99324 falls within Walla Walla County, Washington.
Does ZIP code 99324 have a large retiree population?
40% of households in ZIP code 99324 receive Social Security income, suggesting a significant retiree or disability population.
What is the population of ZIP code 99324?
ZIP code 99324 has an estimated population of 10,076 residents, with a density of 3,636 people per square mile.
What is the typical home value in ZIP code 99324?
The median home value in ZIP code 99324 is $303,700.
What is the median household income in ZIP code 99324?
The median household income in ZIP code 99324 is $63,628, below the national median of ~$75,000.
What timezone is ZIP code 99324 in?
ZIP code 99324 observes the PST timezone.