99330 ZIP Code — Eltopia, WA

Franklin County, Washington

ZIP code 99330 is located in Eltopia, Washington, within Franklin County. It covers approximately 87.48 square miles and serves a population of 876 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 509.

About ZIP code 99330

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $277,000. Owner-occupancy is high at 75%, well above the national average.

The gap between median ($91,444) and mean household income suggests income inequality — a small number of higher earners pull the average up. 46% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is natural resources, construction, and trades, with agriculture and mining as the leading industry. The average commute of 23 minutes is near the national average.

College attainment at 12% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include Spanish spoken in 22% of households.

Overall, ZIP code 99330 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

876
population
87.48
sq mi land
Standard
ZIP type
Pacific (PT)
timezone
99330 ZIP code map
Cities in ZIP code 99330

Below are the cities the US Postal Service accepts for ZIP code 99330. Using any city not on this list may result in mail delivery delays.

City Status
Eltopia Preferred
Nearby ZIP codes
99343 Mesa (5.8 mi) 99354 Richland (14.6 mi) 99301 Pasco (16.3 mi) 99353 West Richland (18.3 mi) 99336 Kennewick (18.8 mi) 99352 Richland (19.4 mi)
Demographics updated 05/2026
Population
Total population 876
Population density 10 / sq mi
State FIPS 53
County FIPS 021
Geography
Land area 87.48 sq mi
Water area 0.00 sq mi
Latitude 46.4819
Longitude -119.0752
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 32.8% 35.5% 31.7%
$50k – $100k 51.5% 33.5% 30.6%
$100k – $200k 15.7% 25.3% 27.1%
Over $200k 0.0% 5.7% 10.6%

Demographics & statistics

876
Population
10
People per sq mi
40.8
Median age
$91,444
Median household income
$53,389
Per capita income
$277,000
Median home value
$0
Median monthly rent
75.2%
Home ownership
1.9%
Poverty rate
4.0%
Unemployment
161
Housing units
11.9%
Bachelor's or higher

Age distribution

Male Female
60
Under 5
50
10
5–9
8
22
10–14
19
36
15–19
30
9
20–24
8
93
25–34
77
56
35–44
46
16
45–54
13
73
55–59
62
4
60–64
3
83
65–74
70
10
75–84
9
5
85+
4
← Male
Female →

Age summary

GroupCount%
Under 1820523.4%
18 and over67176.6%
65 and over18120.7%
Median age40.8 years

Race & ethnicity

White 46.4%
Hispanic or Latino 26.8%
Other race 26.8%
GroupCount%
White55546.4%
Hispanic or Latino32126.8%
Other race32126.8%

Household income

Income range This ZIP County avg State avg
Under $50k 32.8% 35.5% 31.7%
$50k – $100k 51.5% 33.5% 30.6%
$100k – $200k 15.7% 25.3% 27.1%
Over $200k 0.0% 5.7% 10.6%
$35k–$50k 15.0%
$50k–$75k 22.9%
$75k–$100k 21.0%
$100k–$150k 19.2%
$150k–$200k 10.7%
$200k+ 11.2%
Range% of households
$35k–$50k15.0%
$50k–$75k22.9%
$75k–$100k21.0%
$100k–$150k19.2%
$150k–$200k10.7%
$200k+11.2%
Median income$91,444

Housing

Home values

$200k–$300k 71.4%
$300k–$500k 18.6%
$500k–$1M 9.9%

Housing overview

MetricValue
Median home value$277,000
Median rent / month$0
Owner occupied75.2%
Renter occupied24.8%
Vacant0.0%
Single-family detached71.5%
Large apartment buildings0.0%
Mobile homes28.5%
Median rooms7.7
Avg household size (owned)4.59

Year built

Era%
2020 or later0.0%
2010–20198.4%
2000–20090.0%
1990–199934.6%
1980–198916.4%
1970–197914.0%
1960–19690.0%
1950–195926.6%
1940–19490.0%
1939 or earlier0.0%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom0.0%
2 bedrooms34.6%
3 bedrooms44.9%
4 bedrooms16.4%
5+ bedrooms4.2%

Vehicles per household

Vehicles% of households
No vehicle0.0%
1 vehicle7.5%
2 vehicles25.7%
3 or more66.8%

Heating fuel

Fuel type%
Electricity79.0%
Wood21.0%

Households & families

Household typeCount%
Married-couple family11151.9%
Cohabiting couple188.4%
Male householder, no spouse5626.2%
Female householder, no spouse2913.6%
Households with children under 186932.2%
Households with seniors (65+)10046.7%
Average household size4.09

Marital status

StatusMaleFemale
Never married33.0%18.7%
Married60.0%58.5%
Separated0.0%0.0%
Widowed2.6%3.1%
Divorced4.3%19.7%

Education

Less than 9th grade 26.4%
Some HS, no diploma 2.9%
HS graduate 30.3%
Some college, no degree 17.8%
Associate's degree 10.7%
Bachelor's degree 4.3%
Graduate / professional 7.5%
Metric%
HS diploma or higher70.7%
Bachelor's or higher11.9%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool00.0%
Kindergarten00.0%
Elementary school5947.2%
High school3628.8%
College / grad school3024.0%

Employment

Industry of employment

Agriculture & mining 42.5%
Education & healthcare 14.1%
Public administration 11.4%
Manufacturing 10.9%
Construction 6.3%
Finance & real estate 4.9%
Professional & management 4.1%
Other services 3.9%
Retail trade 1.2%
Wholesale trade 0.7%

Occupation

Category%
Management, business & arts23.8%
Service12.4%
Sales & office7.0%
Natural resources & construction39.1%
Production & transportation17.7%

Employment type

Type%
Private sector74.5%
Government25.5%
Self-employed0.0%
Unpaid family workers0.0%

Commute

Method%
Drive alone74.3%
Carpool22.8%
Public transit0.0%
Walk0.0%
Work from home0.0%
Other means2.9%
Avg commute (minutes)22.7

Poverty

All people 1.9%
Under 18 years 0.0%
18 and over 2.5%
Married-couple families 0.0%
Female-led households 0.0%

Income support

Source% of households
Social Security46.3%
Retirement income20.1%
Supplemental Security8.4%
Cash public assistance0.0%
Food stamps / SNAP8.4%

Health indicators

Condition%
Obesity37.2%
High blood pressure27.6%
High cholesterol31.2%
Diabetes8.4%
Heart disease5.3%
Stroke2.5%
Asthma10.1%
Arthritis21.4%
Kidney disease2.6%
Pulmonary disease5.3%
Cancer5.7%
Behavior / access%
Smoking13.9%
Binge drinking17.7%
No physical activity18.6%
Less than 7 hrs sleep30.2%
Depression23.1%
Fair or poor health13.4%
Poor mental health14.7%
Poor physical health10.1%
No health insurance15.4%
Visited doctor (checkup)66.8%
Visited dentist67.2%
Cholesterol screening86.8%
Teeth loss11.4%

Veterans & disability

VeteransCount%
Civilian veterans355.2%
Disability%
Any disability18.6%
Under 180.0%
18–64 years12.9%
65 and over55.2%

Health insurance coverage

Type%
Private insurance84.2%
Public insurance13.5%
No insurance14.4%
Uninsured under 1928.6%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only76687.4%
Spanish16521.5%
Other Indo-European16521.5%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)63672.6%
Born in same state63672.6%
Born in different state39044.5%
Foreign born00.0%
Naturalized citizen24027.4%
Not a US citizen8033.3%

Ancestry

AncestryCount%
French11413%
Polish111.3%
AncestryCount%
Italian91%
Arab50.6%

Technology access

Metric% of households
Computer access24.4%
Internet access100.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 99330

What city is ZIP code 99330 in?

ZIP code 99330 is primarily assigned to Eltopia, Washington.

What county is ZIP code 99330 in?

ZIP code 99330 falls within Franklin County, Washington.

Is Spanish widely spoken in ZIP code 99330?

Approximately 22% of households in ZIP code 99330 speak Spanish as a primary language.

How educated is the population of ZIP code 99330?

12% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Does ZIP code 99330 have a large retiree population?

46% of households in ZIP code 99330 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 99330?

ZIP code 99330 has an estimated population of 876 residents, with a density of 10 people per square mile.

What timezone is ZIP code 99330 in?

ZIP code 99330 observes the PST timezone.

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