What city is 98043 in?

98043 is a Mountlake Terrace, WA mailing address. By land area, 100% lies inside Mountlake Terrace.

What is the population of 98043?

About 23,101 people (±88), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 21,285.

What is the median household income in 98043?

$107,687 (±$5,707), 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 98043?

14 USPS carrier routes with 9,822 residential and 450 business mailboxes (10,272 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 98043?

The closest, measured center to center: 98036 (1.5 mi, Lynnwood), 98155 (2.8 mi, Shoreline), 98037 (3.2 mi, Lynnwood), 98026 (3.3 mi, Edmonds), 98020 (3.4 mi, Edmonds) and 98028 (4 mi, Kenmore).

98043 ZIP Code, Mountlake Terrace, WA

98043 is a ZIP code in Mountlake Terrace, Washington in Snohomish County. It covers 4.0 square miles of land. The closest ZIP codes are 98036, 98155 and 98037. 23,101 people live here in 9,843 households. At about 5,704 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (57% own). Median household income is $107,687, close to the Washington median of $98,141.

Quick facts

Mailing city: Mountlake Terrace, WA
County: Snohomish County
Land area: 4.0 sq mi
Population: 23,101
Median household income: $107,687
Carrier routes: 14 (9,822 homes)

Key figures

Measure	Value
Residents	23,101
Households	9,843
Median household income	$107,687
Income per person	$59,449
Median age	38.3
Homeowners	56.8%
Median home value	$667,100
Median rent	$2,004
Bachelor's degree or higher	42.9%
Average commute (minutes)	27.9
Households with kids under 18	24.4%
Moved in the past year	16.9%
Below the poverty line	7.0%
Broadband internet	93.6%
Speak a non-English language at home	23.5%

Household income

% of households	Value
<$10K	4.0%
$10–15K	0.9%
$15–25K	2.7%
$25–35K	2.8%
$35–50K	4.7%
$50–75K	17.6%
$75–100K	11.6%
$100–150K	25.7%
$150–200K	13.3%
$200K+	16.6%

Age

% of all residents	Value
<10	9.1%
10–19	9.9%
20–24	5.0%
25–34	19.1%
35–44	16.6%
45–54	11.2%
55–64	12.6%
65–74	9.4%
75+	7.1%

Tenure

% of housing units	Value
Owned, with mortgage	37.3%
Owned outright	17.8%
Rented	41.5%
Vacant	3.5%

Type of building

% of housing units	Value
Detached house	50.6%
Townhome	4.7%
2–4 units	5.6%
5–19 units	19.3%
20+ units	18.2%
Mobile / other	1.5%

Businesses in 98043

472 business establishments with 9,070 employees (ZIP Codes Business Patterns 2023).

Construction: 86
Health Care and Social Assistance: 78
Professional, Scientific, and Technical Services: 57
Other Services (except Public Administration): 48
Retail Trade: 40
Accommodation and Food Services: 31
Finance and Insurance: 24
Administrative and Support and Waste Management and Remediation Services: 24

EDDM carrier routes

98043 has 14 USPS carrier routes with 9,822 residential and 450 business mailboxes. Open the EDDM route map.

Carrier routes in 98043

98043 has 14 USPS carrier routes (14 city (C)) with 9,822 residential and 450 business mailboxes. Routes range from 419 homes (C005) to 1,195 homes (C006); the median route has 606 homes. The Census counted 9,843 households in 98043 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	3
500–749	6
750–999	3
1,000–1,499	2
1,500+	0

Best routes in 98043 for…

Most businesses

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

Route C007 — USPS business mailboxes 241, 581 homes
Route C006 — USPS business mailboxes 40, 1,195 homes
Route C018 — USPS business mailboxes 34, 579 homes
Route C004 — USPS business mailboxes 32, 880 homes
Route C012 — USPS business mailboxes 28, 492 homes

Select these 5 routes on the route map

Every carrier route in 98043

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	640	4	$84,281	—	—	—
C003	City	504	12	$107,417	—	—	—
C004	City	880	32	$81,143	—	—	—
C005	City	419	0	$112,870	—	—	—
C006	City	1,195	40	$101,541	—	—	—
C007	City	581	241	$92,575	—	—	—
C008	City	459	12	$100,871	—	—	—
C010	City	837	25	$105,383	—	—	—
C011	City	631	2	$63,678	—	—	—
C012	City	492	28	$100,871	—	—	—
C013	City	1,138	12	$61,272	—	—	—
C014	City	891	2	$69,867	—	—	—
C015	City	576	6	$120,210	—	—	—
C018	City	579	34	$105,383	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 98043 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

98036 — Lynnwood city, WA (1.5 mi)
98155 — Shoreline city, WA (2.8 mi)
98037 — Lynnwood city, WA (3.2 mi)
98026 — Edmonds city, WA (3.3 mi)
98020 — Edmonds city, WA (3.4 mi)
98028 — Kenmore city, WA (4 mi)
98133 — Shoreline city, WA (4.2 mi)
98021 — Bothell city, WA (4.4 mi)

Areas that include 98043

Mountlake Terrace, WA ZIP codes — 1 ZIP code
Snohomish County ZIP codes — 29 ZIP codes
Washington ZIP code data

Where it ranks

Mail every home in 98043

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) 98043, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 98043 in?: 98043 is a Mountlake Terrace, WA mailing address. By land area, 100% lies inside Mountlake Terrace.
What county is 98043 in?: 98043 is in Snohomish County.
What is the population of 98043?: About 23,101 people (±88), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 21,285.
What is the median household income in 98043?: $107,687 (±$5,707), 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 98043?: 14 USPS carrier routes with 9,822 residential and 450 business mailboxes (10,272 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 98043?: The closest, measured center to center: 98036 (1.5 mi, Lynnwood), 98155 (2.8 mi, Shoreline), 98037 (3.2 mi, Lynnwood), 98026 (3.3 mi, Edmonds), 98020 (3.4 mi, Edmonds) and 98028 (4 mi, Kenmore).

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