Pest control · Issaquah, Washington
Pest control in Issaquah, WA
Termites, ants, roaches, scorpions or rodents? 35% of Issaquah's homes are detached houses[1], and 25% were built since 2010. Request a licensed pest-control company that services the area. Issaquah, in King County — ZIPs 98027, 98029, counts 39,423 residents (2025 estimate)[2].
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The Issaquah pest control picture in brief
- Population (2025 est.)
- 39,423[2]-1.6% since 2020
- County
- King[2]
- Land area
- 12.1 sq mi[3]
- Detached single-family homes
- 35%[1]the lowest share of the 15 Seattle-area suburbs we cover
- Homes built 2010 or later
- 25%[1]the 2nd-highest share of the 15 Seattle-area suburbs we cover
- People per square mile of land
- 3,250[2][3]the 4th-least dense of the 15 Seattle-area suburbs we cover
- Households renting
- 43%[1]2020–2024
- Population change, 2020–2025
- -1.6%[2]the 4th-slowest-growing of the 15 Seattle-area suburbs we cover
- Land area
- 12.1 sq mi[3]city limits
What the local data means for pest control in Issaquah
Issaquah is one of the most established suburbs tracked here — 39,423 people (2025 estimate), down just 1.6% since 2020[2]. It covers 12.1 square miles (3,250 residents per square mile, the 12th densest), sits entirely in King County, in ZIP codes 98027, 98029[3].
Building amid 1.6% decline since 2020 pushes construction into previously open land, which stirs up the pests already living there — and denser housing gives them more neighboring homes to visit.
Mail to Issaquah goes through 2 ZIP codes — 98027 (67% of the city's land), 98029 (33% of the city's land)[4].
Nearest of the other suburbs we track: Sammamish (3.5 mi N), Bellevue (6.2 mi NW) and Renton (8.2 mi SW)[3].
35% of Issaquah's 17,542 housing units are detached houses[1] — the lowest share of the 15 Seattle-area suburbs we cover; nearby, Sammamish (81%), Bellevue (46%), and Renton (51%). With more attached housing, pests move between units — whole-building treatment matters more.
25% of homes were built in 2010 or later[1] (the 2nd-highest share of the 15 Seattle-area suburbs we cover; Sammamish (13%), Bellevue (15%), and Renton (11%) nearby), and population changed -1.6% from 2020 to 2025[2]. Many owners here can still check for a builder termite pre-treatment and warranty.
About 3,250 people live per square mile of land across 12.1 square miles[2][3] — the 4th-least dense of the 15 Seattle-area suburbs we cover. More yard between houses puts the focus on the foundation perimeter and entry points.
43% of households rent and 57% own[1]. Renters: check the lease for who handles pest control.
Among the 15 suburbs tracked here, Issaquah stands out for the lowest share of detached houses (35%)[1] and the newest housing (by median year built) (2002)[1].
Finding pest control help around Issaquah
Requests go to Pest control contractors serving the Issaquah area — ZIP codes 98027, 98029.
Before you pick up the phone: choosing a pest-control plan
The data underneath this Issaquah page
| Measure | Issaquah | Median of 15 | Difference |
|---|---|---|---|
| Growth since 2020 | -1.6% | -0.4% | 1 pts slower |
| Detached single-family | 35% | 51% | 16 pts lower |
| Residents per sq mi | 3,250 | 4,016 | 19% less dense |
| Renter-occupied | 43% | 45% | 2 pts lower |
| Median year built | 2002 | 1985 | 17 years newer |
| Flood reports (10 mi) | 1 | 1 | same as median |
Sorted by largest difference. Each median is the middle value across the covered Seattle-area suburbs, from the same sources.
| City | People / sq mi | Growth since 2020 | Population |
|---|---|---|---|
| Issaquah | 3,250 | -1.6% | 39,423 |
| Sammamish 3.5 mi | 3,236 | -2.0% | 66,110 |
| Bellevue 6.2 mi | 4,606 | 1.5% | 154,193 |
| Renton 8.2 mi | 4,459 | -1.8% | 104,975 |
| Redmond 9.7 mi | 4,972 | 12.6% | 82,506 |
| Kirkland 12.8 mi | 5,471 | 5.7% | 97,410 |
| Measure | Value |
|---|---|
| Housing units | 17,542 |
| Detached single-family | 6,133 (35%) |
| Occupied homes | 16,664 |
| Owner-occupied | 9,557 (57%) |
| Renter-occupied | 7,107 (43%) |
| Median home value | $963,000 |
ACS 2020–2024 estimates.
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 321 | 1.8% | ±138 |
| 2010 to 2019 | 3,984 | 22.7% | ±545 |
| 2000 to 2009 | 5,757 | 32.8% | ±616 |
| 1990 to 1999 | 2,215 | 12.6% | ±354 |
| 1980 to 1989 | 2,200 | 12.5% | ±364 |
| 1970 to 1979 | 1,616 | 9.2% | ±264 |
| 1960 to 1969 | 728 | 4.2% | ±177 |
| 1950 to 1959 | 267 | 1.5% | ±116 |
| 1940 to 1949 | 178 | 1.0% | ±100 |
| 1939 or earlier | 276 | 1.6% | ±153 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| ZIP (ZCTA) | Share of Issaquah's land | Share of the ZIP inside the city |
|---|---|---|
| 98027 | 67% | 14% |
| 98029 | 33% | 39% |
pest control questions from Issaquah homeowners
My Issaquah home is new — do I need termite protection?
Check your closing documents for a builder termite pre-treatment and warranty first. 25% of Issaquah homes were built in 2010 or later[1].
I rent in Issaquah. Who pays for pest control?
Your lease decides. 43% of Issaquah households rent[1].
Which areas does this page cover?
ZIP 98027 and 98029[4], King County. Nearest suburbs with their own pages: Sammamish (3.5 mi), Bellevue (6.2 mi), and Renton (8.2 mi)[3].
My Issaquah home is fairly new — could the termite pre-treatment still be under warranty?
Possibly: 25% of Issaquah's housing units were built in 2010 or later[1], the 2nd-highest share of the 15 Seattle-area suburbs we cover. Check your closing paperwork for warranties before paying for a repair.
Sources
- Census ACS 2020–2024 5-year (keyless bulk)
- Census population estimates, Vintage 2025
- Census Gazetteer 2025
- Census 2020 ZCTA–place file
- NOAA Storm Events Database
Data pulled Sep 28, 2026. Full citations and method.