US ZIP Code
99115

Coulee City, WA

Grant County  ·  Washington

● Active
👥 1,306 Population ↑ 23% since 2019
💰 $49,519 Median HH Income
▼ 35% below avg ↓ 5% since 2019
🎂 52.6 Median Age ↑ 12% since 2019
🏠 $207,600 Median Home Value
▼ 26% below avg ↑ 48% since 2019
🎓 35.8% College Grads
▼ 8% below avg
📊 5.9% Unemployment
▲ 20% above avg ↓ 59% since 2019
ZIP Code Details
ZIP Code99115
CityCoulee City
StateWashington (WA)
CountyGrant County
Area Code509
Elevation1,669 ft
Latitude47.674057
Longitude-119.377651
TimezoneLos Angeles (DST)
FIPS53025
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 49.2% (642) Female 50.8% (664) ♀

Race & Ethnicity

White: 86.6%Hispanic: 0.7%Asian: 0.8%Other: 10.9%Race
White86.6%
Hispanic0.7%
Asian0.8%
Other10.9%

Age Breakdown

Under 5
7%
5–17
10%
18–24
7%
25–44
17%
45–64
22%
65+
18%

Key Indicators

Median Age52.6 yrs ↑ 12% since 2019
Avg Household Size2.44
Below Poverty10.9% ▲ 9% above avg
College Grads35.8% ▼ 8% below avg
Unemployment5.9% ▲ 20% above avg
HS Graduate305 (32.9%)
Some College129 (13.9%)
Associates162 (17.5%)
Bachelors130 (14%)
Graduate Degree202 (21.8%)

Education

HS Grad: 32.9%Some College: 13.9%Associates: 17.5%Bachelors: 14%Graduate: 21.8%Edu
HS Grad32.9%
Some College13.9%
Associates17.5%
Bachelors14.0%
Graduate21.8%
Housing & Income

Housing Tenure

Owner: 71.6%Renter: 28.4%Tenure
Owner71.6%
Renter28.4%

Home Value Distribution

Under $50k
8%
$50k–100k
16%
$100k–150k
8%
$150k–200k
16%
$200k–300k
29%
$300k–500k
17%
Over $500k
6%

Financials

Median HH Income$49,519 ▼ 35% below avg ↓ 5% since 2019
Median Home Value$207,600 ▼ 26% below avg ↑ 48% since 2019
Home/Income Ratio4.2x (nat avg ~3.5x)
Median Rent$726/mo ↑ 26% since 2019
Total Units974
Vacant Units438
Avg HH Size2.44

Income Distribution

Under $25k
21%
$25k–50k
28%
$50k–75k
29%
$75k–100k
3%
$100k–150k
16%
$150k–200k
3%
Employment & Commute

How People Get to Work

Drove Alone
79%
Walked
4%
Work From Home
18%

Commute Time

Under 15 min
42%
15–30 min
26%
30–45 min
29%
Over 45 min
4%
Housing Stock

Year Built

Before 1940
3%
1940s–1950s
8%
1960s–1970s
9%
1980s–1990s
15%
2000+
64%

Summary

Total Units974
Vacant438
Owner Occupied71.6%
Renter Occupied28.4%
Avg HH Size2.44
Frequently Asked Questions
ZIP code 99115 is in Coulee City, WA, in Grant County.
ZIP code 99115 is located in Washington (WA).
ZIP code 99115 is in Grant County, WA.
ZIP 99115 observes the Los Angeles timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 99115 is 1,306 people (ACS 2023).
The median household income in ZIP code 99115 is $49,519 (ACS 2023).
The median home value in ZIP 99115 is $207,600 (ACS 2023).
About ZIP Code 99115

ZIP code 99115 is located in Coulee City, Washington, within Grant County. With a population of 1,306, this is a sparsely populated ZIP code with a mature community — the median age is 52.6 years. Economically, 99115 is a working-class ZIP code: the median household income of $49,519 is below the national average.

Real estate in ZIP code 99115 represents an affordable housing market. The median home value of $207,600 is below the national average. Renters can expect to pay around $726 per month in median rent. Homeownership is strong here — 71.6% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 48% since 2019.

The population of 99115 is primarily White (86.60%). Residents are moderately educated — 35.8% hold a bachelor's degree or higher, which is near the national average. Poverty affects some residents at 10.9%. Household income has declined by 5% since 2019.

The unemployment rate in 99115 stands at 5.9%, which is above the national average. About 16% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 72%.

Overall, ZIP code 99115 in Coulee City, WA is characterized as working-class, moderately educated, a mature community, and predominantly owner-occupied. With 1,306 residents, a median household income of $49,519, and a median home value of $207,600, it offers a clear picture of life in this part of Washington.