What city is 98029 in?

98029 is a Issaquah, WA mailing address. By land area, 39% lies inside Issaquah and 19% lies inside Sammamish; the rest is outside any Census-defined city or community.

What is the population of 98029?

About 30,586 people (±1,475), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 31,432.

What is the median household income in 98029?

$170,759 (±$19,816), 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 98029?

16 USPS carrier routes with 12,665 residential and 235 business mailboxes (12,900 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 98029?

The closest, measured center to center: 98075 (2.3 mi, Sammamish), 98027 (3.1 mi, Mirrormont), 98050 (3.4 mi), 98074 (4.7 mi, Sammamish), 98024 (5.3 mi, Fall City) and 98008 (5.8 mi, Bellevue).

98029 ZIP Code, Issaquah, WA

98029 is a ZIP code in Issaquah, Washington in King County. It covers 10 square miles of land. The closest ZIP codes are 98075, 98027 and 98050. 30,586 people live here in 12,115 households. At about 3,006 people per square mile it has suburban density, and owners and renters are mixed (62% own). Median household income is $170,759, well above the Washington median of $98,141.

Quick facts

Mailing city: Issaquah, WA
County: King County
Land area: 10 sq mi
Population: 30,586
Median household income: $170,759
Carrier routes: 16 (12,665 homes)

Key figures

Measure	Value
Residents	30,586
Households	12,115
Median household income	$170,759
Income per person	$97,208
Median age	37.2
Homeowners	62.3%
Median home value	$1,063,200
Median rent	$2,740
Bachelor's degree or higher	72.2%
Average commute (minutes)	28.6
Households with kids under 18	38.2%
Moved in the past year	14.6%
Below the poverty line	4.9%
Broadband internet	97.5%
Speak a non-English language at home	38.7%

Household income

% of households	Value
<$10K	3.2%
$10–15K	0.8%
$15–25K	4.0%
$25–35K	2.3%
$35–50K	2.8%
$50–75K	10.1%
$75–100K	5.3%
$100–150K	14.4%
$150–200K	14.9%
$200K+	42.3%

Age

% of all residents	Value
<10	12.2%
10–19	13.8%
20–24	3.0%
25–34	16.3%
35–44	18.1%
45–54	15.4%
55–64	9.1%
65–74	5.9%
75+	6.0%

Tenure

% of housing units	Value
Owned, with mortgage	42.9%
Owned outright	16.6%
Rented	35.7%
Vacant	4.7%

Type of building

% of housing units	Value
Detached house	40.4%
Townhome	16.2%
2–4 units	8.1%
5–19 units	18.0%
20+ units	17.2%
Mobile / other	0.1%

Businesses in 98029

498 business establishments with 8,592 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 81
Health Care and Social Assistance: 70
Real Estate and Rental and Leasing: 52
Retail Trade: 46
Accommodation and Food Services: 45
Other Services (except Public Administration): 35
Finance and Insurance: 34
Administrative and Support and Waste Management and Remediation Services: 24

EDDM carrier routes

98029 has 16 USPS carrier routes with 12,665 residential and 235 business mailboxes. Open the EDDM route map.

Carrier routes in 98029

98029 has 16 USPS carrier routes (16 rural (R)) with 12,665 residential and 235 business mailboxes. Routes range from 549 homes (R046) to 904 homes (R023); the median route has 811 homes. The Census counted 12,115 households in 98029 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	0
500–749	4
750–999	12
1,000–1,499	0
1,500+	0

Best routes in 98029 for…

Most businesses

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

Route R031 — USPS business mailboxes 92, 568 homes
Route R009 — USPS business mailboxes 40, 897 homes
Route R033 — USPS business mailboxes 28, 787 homes
Route R023 — USPS business mailboxes 22, 904 homes
Route R010 — USPS business mailboxes 13, 754 homes

Select these 5 routes on the route map

Every carrier route in 98029

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R009	Rural	897	40	$128,004	—	—	—
R010	Rural	754	13	$188,848	—	—	—
R013	Rural	848	4	$128,004	—	—	—
R017	Rural	809	3	$199,260	—	—	—
R022	Rural	732	1	$200,001+	—	—	—
R023	Rural	904	22	$128,004	—	—	—
R027	Rural	721	1	$199,260	—	—	—
R029	Rural	857	10	$128,004	—	—	—
R030	Rural	897	3	$200,001+	—	—	—
R031	Rural	568	92	$106,451	—	—	—
R033	Rural	787	28	$163,168	—	—	—
R035	Rural	844	4	$115,404	—	—	—
R041	Rural	813	2	$200,001+	—	—	—
R042	Rural	803	0	$200,001+	—	—	—
R045	Rural	882	10	$191,036	—	—	—
R046	Rural	549	2	$200,001+	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 98029 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

98075 — Sammamish city, WA (2.3 mi)
98027 — Mirrormont CDP, WA (3.1 mi)
98050 (3.4 mi)
98074 — Sammamish city, WA (4.7 mi)
98024 — Fall City CDP, WA (5.3 mi)
98008 — Bellevue city, WA (5.8 mi)
98006 — Bellevue city, WA (6.6 mi)
98059 — East Renton Highlands CDP, WA (7.1 mi)

Areas that include 98029

Where it ranks

Mail every home in 98029

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) 98029, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 98029 in?: 98029 is a Issaquah, WA mailing address. By land area, 39% lies inside Issaquah and 19% lies inside Sammamish; the rest is outside any Census-defined city or community.
What county is 98029 in?: 98029 is in King County.
What is the population of 98029?: About 30,586 people (±1,475), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 31,432.
What is the median household income in 98029?: $170,759 (±$19,816), 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 98029?: 16 USPS carrier routes with 12,665 residential and 235 business mailboxes (12,900 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 98029?: The closest, measured center to center: 98075 (2.3 mi, Sammamish), 98027 (3.1 mi, Mirrormont), 98050 (3.4 mi), 98074 (4.7 mi, Sammamish), 98024 (5.3 mi, Fall City) and 98008 (5.8 mi, Bellevue).

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