What city is 98198 in?

98198 is a Seattle, WA mailing address. By land area, 78% lies inside Des Moines and 21% lies inside SeaTac.

What is the population of 98198?

About 40,463 people (±1,211), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 38,727.

What is the median household income in 98198?

$86,239 (±$8,405), 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 98198?

18 USPS carrier routes with 15,323 residential and 512 business mailboxes (15,835 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 98198?

The closest, measured center to center: 98032 (2.7 mi, Kent), 98148 (3.7 mi, Burien), 98158 (4.1 mi, SeaTac), 98188 (4.3 mi, Tukwila), 98166 (4.5 mi, Burien) and 98030 (5.7 mi, Kent).

98198 ZIP Code, Seattle, WA

98198 is a ZIP code in Seattle, Washington in King County. It covers 7.7 square miles of land. The closest ZIP codes are 98032, 98148 and 98158. 40,463 people live here in 14,588 households, more than in 9 of every 10 Washington ZIP codes. At about 5,237 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (55% own). Median household income is $86,239, below the Washington median of $98,141.

Quick facts

Mailing city: Seattle, WA
County: King County
Land area: 7.7 sq mi
Population: 40,463
Median household income: $86,239
Carrier routes: 18 (15,323 homes)

Key figures

Measure	Value
Residents	40,463
Households	14,588
Median household income	$86,239
Income per person	$41,819
Median age	36.1
Homeowners	54.8%
Median home value	$589,500
Median rent	$1,814
Bachelor's degree or higher	30.8%
Average commute (minutes)	30.3
Households with kids under 18	31.6%
Moved in the past year	17.4%
Below the poverty line	12.9%
Broadband internet	94.2%
Speak a non-English language at home	40.8%

Household income

% of households	Value
<$10K	2.3%
$10–15K	1.7%
$15–25K	6.2%
$25–35K	5.6%
$35–50K	12.9%
$50–75K	15.3%
$75–100K	12.6%
$100–150K	20.6%
$150–200K	10.6%
$200K+	12.3%

Age

% of all residents	Value
<10	12.5%
10–19	11.7%
20–24	5.6%
25–34	18.1%
35–44	15.4%
45–54	11.1%
55–64	9.8%
65–74	8.7%
75+	7.1%

Tenure

% of housing units	Value
Owned, with mortgage	36.4%
Owned outright	16.5%
Rented	42.7%
Vacant	4.4%

Type of building

% of housing units	Value
Detached house	50.0%
Townhome	2.7%
2–4 units	8.2%
5–19 units	18.1%
20+ units	19.1%
Mobile / other	1.9%

Businesses in 98198

653 business establishments with 6,976 employees (ZIP Codes Business Patterns 2023).

Construction: 99
Health Care and Social Assistance: 88
Other Services (except Public Administration): 81
Accommodation and Food Services: 66
Retail Trade: 58
Professional, Scientific, and Technical Services: 50
Real Estate and Rental and Leasing: 49
Administrative and Support and Waste Management and Remediation Services: 49

EDDM carrier routes

98198 has 18 USPS carrier routes with 15,323 residential and 512 business mailboxes. Open the EDDM route map.

Carrier routes in 98198

98198 has 18 USPS carrier routes (18 city (C)) with 15,323 residential and 512 business mailboxes. Routes range from 572 homes (C055) to 1,800 homes (C077); the median route has 753 homes. The Census counted 14,588 households in 98198 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	0
500–749	9
750–999	6
1,000–1,499	2
1,500+	1

Best routes in 98198 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route C096 — USPS business mailboxes 129, 620 homes
Route C045 — USPS business mailboxes 70, 1,151 homes
Route C085 — USPS business mailboxes 64, 759 homes
Route C077 — USPS business mailboxes 62, 1,800 homes
Route C069 — USPS business mailboxes 58, 994 homes

Select these 5 routes on the route map

Every carrier route in 98198

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C004	City	691	3	$103,315	—	—	—
C005	City	747	5	$137,877	—	—	—
C019	City	632	0	$109,165	—	—	—
C029	City	943	5	$60,677	—	—	—
C031	City	609	15	$121,755	—	—	—
C039	City	865	14	$80,759	—	—	—
C042	City	661	3	$125,741	—	—	—
C045	City	1,151	70	$63,063	—	—	—
C055	City	572	37	$78,248	—	—	—
C069	City	994	58	$109,165	—	—	—
C075	City	616	3	$80,396	—	—	—
C076	City	925	38	$63,063	—	—	—
C077	City	1,800	62	$70,395	—	—	—
C085	City	759	64	$103,315	—	—	—
C086	City	1,224	2	$50,000	—	—	—
C093	City	665	2	$60,677	—	—	—
C094	City	849	2	$104,967	—	—	—
C096	City	620	129	$78,248	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 98198 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

98032 — Kent city, WA (2.7 mi)
98148 — Burien city, WA (3.7 mi)
98158 — SeaTac city, WA (4.1 mi)
98188 — Tukwila city, WA (4.3 mi)
98166 — Burien city, WA (4.5 mi)
98030 — Kent city, WA (5.7 mi)
98031 — Kent city, WA (5.8 mi)
98003 — Federal Way city, WA (6 mi)

Areas that include 98198

Where it ranks

Mail every home in 98198

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.

Seattle EDDM mailing

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 98198, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 98198 in?: 98198 is a Seattle, WA mailing address. By land area, 78% lies inside Des Moines and 21% lies inside SeaTac.
What county is 98198 in?: 98198 is in King County.
What is the population of 98198?: About 40,463 people (±1,211), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 38,727.
What is the median household income in 98198?: $86,239 (±$8,405), 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 98198?: 18 USPS carrier routes with 15,323 residential and 512 business mailboxes (15,835 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 98198?: The closest, measured center to center: 98032 (2.7 mi, Kent), 98148 (3.7 mi, Burien), 98158 (4.1 mi, SeaTac), 98188 (4.3 mi, Tukwila), 98166 (4.5 mi, Burien) and 98030 (5.7 mi, Kent).

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