What city is 99330 in?

99330 is a Eltopia, WA mailing address. None of its land lies inside a Census-defined city or community.

What is the population of 99330?

About 1,210 people (±579), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 1,061.

What is the median household income in 99330?

$140,093 (±$75,464), compared with $98,141 for Washington as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 99330?

1 USPS carrier routes with 321 residential and 7 business mailboxes (328 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 99330?

The closest, measured center to center: 99301 (8.9 mi, Pasco), 99343 (9.5 mi, Basin City), 99326 (15 mi, Connell), 99354 (17.2 mi, Richland), 99336 (20.6 mi, Kennewick) and 99353 (21.1 mi, West Richland).

99330 ZIP Code, Eltopia, WA

99330 is a ZIP code in Eltopia, Washington in Franklin County. It covers 87 square miles of land. The closest ZIP codes are 99301, 99343 and 99326. 1,210 people live here in 252 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (93%). Median household income is $140,093, above the Washington median of $98,141; 71% of households have children under 18.

Quick facts

Mailing city: Eltopia, WA
County: Franklin County
Land area: 87 sq mi
Population: 1,210
Median household income: $140,093
Carrier routes: 1 (321 homes)

Key figures

Measure	Value
Residents	1,210
Households	252
Median household income	$140,093
Income per person	$58,875
Median age	26
Homeowners	93.3%
Median home value	$554,200
Median rent	not published
Bachelor's degree or higher	15.3%
Average commute (minutes)	19.9
Households with kids under 18	70.6%
Moved in the past year	3.1%
Below the poverty line	1.8%
Broadband internet	75.0%
Speak a non-English language at home	9.7%

Household income

% of households	Value
<$10K	0.0%
$10–15K	0.0%
$15–25K	0.0%
$25–35K	0.0%
$35–50K	2.0%
$50–75K	35.3%
$75–100K	0.0%
$100–150K	23.0%
$150–200K	17.1%
$200K+	22.6%

Age

% of all residents	Value
<10	30.6%
10–19	14.0%
20–24	2.1%
25–34	13.1%
35–44	15.7%
45–54	11.1%
55–64	7.1%
65–74	5.7%
75+	0.7%

Tenure

% of housing units	Value
Owned, with mortgage	71.4%
Owned outright	21.8%
Rented	6.7%
Vacant	0.0%

Type of building

% of housing units	Value
Detached house	73.8%
Townhome	0.0%
2–4 units	0.0%
5–19 units	0.0%
20+ units	0.0%
Mobile / other	26.2%

Businesses in 99330

19 business establishments with 109 employees (ZIP Codes Business Patterns 2023).

Construction: 5
Wholesale Trade: 4
Other Services (except Public Administration): 4

EDDM carrier routes

99330 has 1 USPS carrier routes with 321 residential and 7 business mailboxes. Open the EDDM route map.

Carrier routes in 99330

99330 has 1 USPS carrier routes (1 highway contract (H)) with 321 residential and 7 business mailboxes. Routes range from 321 homes (H001) to 321 homes (H001); the median route has 321 homes. The Census counted 252 households in 99330 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	1
500–749	0
750–999	0
1,000–1,499	0
1,500+	0

Every carrier route in 99330

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
H001	Highway contract	321	7	$106,220	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 99330 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

99301 — Pasco city, WA (8.9 mi)
99343 — Basin City CDP, WA (9.5 mi)
99326 — Connell city, WA (15 mi)
99354 — Richland city, WA (17.2 mi)
99336 — Kennewick city, WA (20.6 mi)
99353 — West Richland city, WA (21.1 mi)
99352 — Richland city, WA (21.2 mi)
99323 — Burbank CDP, WA (22.4 mi)

Areas that include 99330

Where it ranks

Mail every home in 99330

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 99330, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 99330 in?: 99330 is a Eltopia, WA mailing address. None of its land lies inside a Census-defined city or community.
What county is 99330 in?: 99330 is in Franklin County.
What is the population of 99330?: About 1,210 people (±579), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 1,061.
What is the median household income in 99330?: $140,093 (±$75,464), compared with $98,141 for Washington as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 99330?: 1 USPS carrier routes with 321 residential and 7 business mailboxes (328 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 99330?: The closest, measured center to center: 99301 (8.9 mi, Pasco), 99343 (9.5 mi, Basin City), 99326 (15 mi, Connell), 99354 (17.2 mi, Richland), 99336 (20.6 mi, Kennewick) and 99353 (21.1 mi, West Richland).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.