Lake CassidyWA
A town of 3,292.
Is Lake Cassidy a good place to live?
For most people who can afford it, yes. Lake Cassidy grades B overall, 89th among Washington's 285 graded towns. The median household earns $113K. It is healthier than 81% of U.S. towns. The trade-off is money: homes are expensive, about $705K for a typical one and 6.1 times the Seattle metro’s $115K median household income. Lake Cassidy’s July high is 74°F, where Washington’s towns sit at 77°F and U.S. towns at 85°F. The biggest park or preserve is Corson Natural Wildlife Area, at 160 acres.
Lake Cassidy has grown 10% from 2010 to 2020
3,415 counted in 2010 and 3,757 in 2020.
U.S. Census 2010 & 2020 counts
How Lake Cassidy grades
Each subject compared with towns across the country (schools within Washington), ordered by how far Lake Cassidy is from typical.
How TownRatings grades towns →
Moving to Lake Cassidy: who provides what
Lake Cassidy is unincorporated, so Snohomish County and regional agencies provide most services.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 30, 2026.
The data
Ordered by what stands out in Lake Cassidy.
Lake Cassidy has fewer 90° days than nearly all U.S. towns, sends most of its workers to Everett and beyond and owes part of its health edge to its incomes.
For health, Lake Cassidy earns an A−
Against the 6,689 U.S. towns with household incomes like Lake Cassidy’s, it is healthier than 64%, a smaller edge than it has nationally: part of it comes with its incomes.
73% of adults had a checkup this year in Lake Cassidy. Lake Cassidy beats the Washington average on 5 of 31 CDC measures and trails it on 4. 27% of adults have been diagnosed with depression in Lake Cassidy.
| Lake Cassidy | Washington towns | U.S. towns | |
|---|---|---|---|
| Yearly checkup (CDC PLACES) | 73% | 71% | 79% |
| Depression (CDC PLACES) | 27% | 26% | 23% |
| Get no exercise (CDC PLACES) | 17% | 18% | 25% |
| Diabetes (CDC PLACES) | 9.3% | 9.8% | 12% |
| What stands out | Lake Cassidy | WA |
|---|---|---|
| Fewer uninsured adults | 6.7% | 8.4% |
| Fewer adults facing food insecurity | 8.4% | 10.2% |
| More adults who have had cancer | 9% | 7.9% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Most working residents commute out of Lake Cassidy
Lake Cassidy has 253 jobs for its 1,914 working residents: even if every job went to a resident, most would still commute out.
Most working residents leave Lake Cassidy for work: only 1% work in town. Jobs based in Lake Cassidy grew to 253 in 2023, 103 more than in 2013. 4.9% of Lake Cassidy residents live below the poverty line.
| Lake Cassidy | Washington towns | U.S. towns | |
|---|---|---|---|
| Median household income | $113,000 | $98,000 | $80,000 |
| Below the poverty line | 4.9% | 7.9% | 9.6% |
| Average trip to work | 29 minutes | 27 minutes | 25 minutes |
| Working residents who work in town | 0.6% | 5% | 8% |
Where working residents work
Census LEHD 2023 · ACS
Lake Cassidy has mild winters and pleasant summers
The Monroe weather station, 16 miles away, records that about 2 days a year reach 90°, fewer than in 97% of U.S. towns. July afternoons average 74.2°, cooler than in 99% of U.S. towns; January nights average 35.1°.
Lake Cassidy has mild winters and cool summers, with plenty of rain. Lake Cassidy’s January low is 35°F. About 3 inches of snow falls in a winter.
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
Conserved land covers 7.4% of Lake Cassidy
1.6 miles of trail in 2 parks and preserves. The trail density in Lake Cassidy is 0.2 miles per square mile.
| Lake Cassidy | Washington towns | U.S. towns | |
|---|---|---|---|
| Miles of trail per square mile | 0.2 miles per square mile | 0.8 | 0.4 |
| Conserved land | 7.4% | 4% | 4.3% |
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Corson Natural Wildlife Area | 0.3 mi | 160 |
| 2. Hartford Field | — | 2 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Inland flooding leads a moderate hazard risk in Lake Cassidy
Expected storm and flood damage is lower than in 55% of U.S. communities.
FEMA National Risk Index · OpenFEMA
A home in Lake Cassidy sells for about $950K at the median
Zillow Home Value Index · Redfin Data Center
Space Needle and 117 more within 40 miles
Museums, parks, gardens and other places to visit around Lake Cassidy. Close and well known come first.
Big draw33 mi LookoutSpace Needle
Big draw33 mi Stadium & arenaClimate Pledge Arena
Big draw35 mi Stadium & arenaLumen Field
35 mi Stadium & arenaT-Mobile Park
34 mi Ancient siteSeattle Underground
31 mi Stadium & arenaHusky StadiumPhoto credits
Space Needle: Another Believer, CC BY-SA 4.0 · Climate Pledge Arena: Sea Cow, CC BY-SA 4.0 · Lumen Field: "Smart Destinations", GoSeattleCard.com, and Go Seattle Card Blog, CC BY-SA 2.0 · T-Mobile Park: MyName (Cacophony), CC BY-SA 3.0 · Seattle Underground: Mark Hursh, CC BY-SA 3.0 · Husky Stadium: Atomic Taco, CC BY-SA 2.0
Everything we know about Lake Cassidy
Colleges nearby
1 within 15 miles of the center of Lake Cassidy
About 6 of every 100 Lake Cassidy residents are enrolled in college, about the same as Washington.
99% of working residents leave Lake Cassidy for work
Where Lake Cassidy’s working residents go each day. Line width shows the share.
Census LEHD 2023
About Lake Cassidy
CDP in Washington, United States
Lake Cassidy is a census-designated place (CDP) located in Snohomish County, Washington, United States. As of the 2020 census, Lake Cassidy had a population of 3,757.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 11 sq mi
- Elevation
- 371 ft
- Area code
- 360
Lake Cassidy’s neighbors
4 towns share a border with Lake Cassidy.
| Town | WA rank | Overall | Cost | Safety | Schools | Health |
|---|---|---|---|---|---|---|
| Lake Cassidy | #89 | B | C− | — | B | A− |
| Marysville | #185 | C | C− | C+ | C | A− |
| Lochsloy | #129 | B− | C+ | — | B− | A− |
| Sisco Heights | #175 | C+ | C | — | C+ | A− |
| Lake Stevens | #25 | A− | D | B+ | A− | A |
Lake Cassidy, Lochsloy and Sisco Heights report no FBI crime data of their own. Compare Lake Cassidy with a neighbor →
Questions about Lake Cassidy
Short answers, built from the data on this page.
Is Lake Cassidy, WA a good place to live?
For most people who can afford it, yes. Lake Cassidy grades B overall, better than 60% of U.S. towns and #89 of 285 in Washington. It grades A− for health and B for schools. Cost of living is its weak spot, with a C−.
Is Lake Cassidy, WA expensive?
Yes. The typical home is worth about $705,000, 20% above the Washington typical home. Cost of living, which also weighs rents, property taxes and how many households pay 30% or more of their income for housing, grades C−.