PlainZIP

Coulee City, WA · standard

ZIP Code 99115

Grant County, Washington - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

1,143
1/sq mi
$62,708
Median income
$247,200
Median home value
18.0%
Bachelor's or higher

The verdict

Coulee City pairs a below-median household income with above-median home values, in a rural, homeowner-dominated area.

34th pct
household income, US ZIPs
Top 43%
home value, US ZIPs
1
people per sq mi
70%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 99115 against every reporting US ZIP.

ZIP code 99115 is a sparsely populated ZIP (a standard USPS delivery area) in Coulee City, Grant County, Washington, home to just 1,143 residents across 1039.1 square miles, a density of 1 people per square mile, in the Los Angeles time zone.

ZIP 99115 reports a modest median household income of $62,708 (31% below the Washington average), while per-capita income is $28,432. 7.0% of residents live below the poverty line, and the unemployment rate reads 4.5%. Housing costs here run $247,200 for a typical home value (52% below the state average), with rent averaging $725 a month; 69.7% of homes are owner-occupied.

Educational attainment sits below the national norm: 18.0% of adults hold a bachelor's degree or higher, the median age is 50.5, and the average commute is -. Washington and national benchmarks, shown above, are the best way to contextualize 99115, not the raw numbers alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 99115

Top 5 sectors by establishment count in Coulee City, WA

Which industries have the most business establishments in ZIP 99115.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 99115, Coulee City, WA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

1,143

Population

1039.1

Area (sq mi)

1

People / sq mi

Los Angeles

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 99115?

50.5

Median Age

49.1%

Male

50.9%

Female

0.8%

Foreign-Born

White 85.4%
African American 0.0%
Asian 0.7%
American Indian or Alaska Native 0.2%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 12.8%
Hispanic or Latino 1.4%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$62,708

Median Household Income

-31% vs state

$28,432

Per Capita Income

7.0%

Poverty Rate

4.5%

Unemployment Rate

How ZIP 99115 ranks nationally

Coulee City, WA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$62,708 34th percentile higher than 34% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 55.6%
Bachelor's Degree or Higher 18.0%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

982

Total Housing Units

552

Occupied Units

430

Vacant Units

2.48

Avg Household Size

Occupancy Type

Owner 69.7%
Renter 30.3%

$247,200

Median Home Value

-52% vs state

$725

Median Rent

1975

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 25 business establishments in ZIP 99115, employing approximately 147 people with a combined annual payroll of $8,324,000.

25

Businesses

147

Employees

$8.3M

Annual Payroll

4

Industry Sectors

Industry Establishments % of Total
Retail trade 6 24.0%
Accommodation and food services 6 24.0%
Construction 3 12.0%
Other services (except public administration) 3 12.0%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

More ZIP Codes in Grant County

98837 standard
Moses Lake, WA
Pop: 39,722
98848 standard
Quincy, WA
Pop: 11,518
98823 standard
Ephrata, WA
Pop: 11,055
99349 standard
Mattawa, WA
Pop: 8,483
99357 standard
Royal City, WA
Pop: 4,323
98857 standard
Warden, WA
Pop: 4,082

Related Areas

Grant County Coulee City, WA Washington

Frequently Asked Questions

What county is ZIP code 99115 in? ▼
ZIP code 99115 (Coulee City) is located in Grant County, Washington. Grant County contains multiple ZIP codes, see the full list at /counties/grant-wa.
What is the population of ZIP code 99115? ▼
ZIP code 99115 in Coulee City, WA has a population of 1,143 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 99115? ▼
The median household income in ZIP 99115 is $62,708, which is 18% below the national average of $76,288.
What is the average home value in ZIP 99115? ▼
The median home value in ZIP 99115 is $247,200, which is 11% below the national average of $278,155.
What is the demographic makeup of ZIP 99115? ▼
The largest racial group in ZIP 99115 is White at 85.4%. Hispanic or Latino residents make up 1.4% of the population.
How many businesses are in ZIP code 99115? ▼
ZIP code 99115 has 25 business establishments employing approximately 147 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 99115? ▼
The top industries by establishment count in ZIP 99115 are: Retail trade (6), Accommodation and food services (6), Construction (3). There are 4 industry sectors represented in total.
What is the education level in ZIP code 99115? ▼
In ZIP code 99115, 55.6% of residents aged 25+ have a high school diploma or higher, and 18.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 99115? ▼
In ZIP code 99115, approximately 69.7% of occupied housing units are owner-occupied and 30.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 99115? ▼
The poverty rate in ZIP code 99115 is 7.0% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.