County profile · Washington
King County, WA market data
How King County compares with other counties for 56 business types: competitors, household spending, official counts and growth.
- Population, 2025
- 2,344,939
- +3.1% since 2020
- Households
- 941,054
- Median household income
- $124,746
- +31.4% vs. 2015–2019, before inflation
- Median home value
- $859,900
- Jobs located here
- 1,503,962
- Highest market score
- 89
- HVAC and plumbing, #11 of 1,707 scored counties
A site report maps the competitors on map listings around any address in King County by name and distance, and the households and spending within reach. Or open the report at the center of King County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardSurvey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure
What this means
King County has an estimated 2,344,939 people and 941,054 households. Between 2020 and 2025, the population of King County grew 3.1%, in step with the U.S. (+3.1%). Median household income in King County is $124,746, 55% above the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 31.4%, before inflation.
Relative to the U.S., household spending in King County runs highest on child care and other personal services (an index of 187, where 100 is the U.S. average) and lowest on vehicle insurance (83).
Of the business types scored in King County, HVAC and plumbing companies (89), laundromats (87) and convenience stores (87) have the highest Groundwork market scores. For HVAC and plumbing companies, that ranks #11 of 1,707 scored counties.
King County is part of the Seattle-Tacoma-Bellevue metro area. Against the U.S., map listings per household run highest for yoga, Pilates and fitness studios (79% above the U.S. rate) and lowest for funeral homes (71% below the U.S. rate).
All 56 business types in King County
Highest Groundwork market score first. Each score compares King County with other counties for that business type, from 0 to 100. Spending per listing divides a whole spending line (all vehicle repairs, all eating out) by one type’s listings: the demand for each competitor, not a business’s revenue. Compare it across markets with its index, where 100 is the U.S. figure for the same type; the real estate types, whose line is all housing costs, show the index only. How the score works.
| Business type | Score | Rank among counties | Listings | Per 10k households | Spending per listing | Spending per listing vs. U.S. (100) | Official establishments |
|---|---|---|---|---|---|---|---|
| HVAC and plumbing | 89 | #11 of 1,707 | 388 | 4.1 | $8.9M | 187 | 468 |
| Laundromats | 87 | #22 of 785 | 68 | 0.7 | $32.6M | 261 | 34 |
| Convenience stores | 87 | #66 of 2,261 | 445 | 4.7 | $14.9M | 189 | 162 |
| Pest control | 86 | #4 of 699 | 75 | 0.8 | $21M | 206 | 44 |
| Home repair trades | 84 | #21 of 2,057 | 842 | 8.9 | $4.1M | 168 | 1,151 |
| Electricians | 82 | #37 of 1,160 | 182 | 1.9 | $18.9M | 158 | 477 |
| Urgent care and walk-in clinics | 80 | #7 of 325 | 44 | 0.5 | $34.9M | 142 | 49 |
| Car washes and detailing | 79 | #63 of 1,451 | 185 | 2.0 | $5M | 198 | 96 |
| Tire shops | 79 | #107 of 1,530 | 189 | 2.0 | $4.9M | 195 | 94 |
| Pizza | 78 | #114 of 2,090 | 590 | 6.3 | $8.2M | 162 | 1,771 |
| Veterinarians | 78 | #117 of 1,485 | 298 | 3.2 | $4.1M | 152 | 276 |
| Fast food and sandwich shops | 77 | #182 of 2,222 | 942 | 10.0 | $5.1M | 169 | 1,771 |
| Home inspectors | 76 | #25 of 415 | 60 | 0.6 | Index only | 131 | 48 |
| Pet grooming and boarding | 76 | #100 of 1,461 | 310 | 3.3 | $4M | 156 | 217 |
| Landscaping and lawn care | 76 | #116 of 1,493 | 360 | 3.8 | $4.4M | 150 | 843 |
| Auto repair and car care | 76 | #196 of 2,401 | 2,125 | 22.6 | $434K | 162 | 1,003 |
| Grocery and convenience stores | 75 | #291 of 2,402 | 1,546 | 16.4 | $4.3M | 126 | 661 |
| Funeral homes | 74 | #156 of 1,472 | 61 | 0.6 | $1.8M | 265 | 33 |
| Roofing and gutters | 73 | #118 of 1,177 | 272 | 2.9 | $12.7M | 150 | 206 |
| Pet businesses | 73 | #187 of 2,200 | 912 | 9.7 | $1.4M | 154 | 613 |
| Auto repair shops | 73 | #254 of 2,378 | 1,313 | 14.0 | $702K | 158 | 752 |
| Collision repair and body shops | 72 | #166 of 1,327 | 181 | 1.9 | $5.1M | 165 | 210 |
| Barbershops | 72 | #179 of 1,356 | 360 | 3.8 | $3.4M | 178 | 80 |
| Oil change and quick lube | 71 | #57 of 479 | 45 | 0.5 | $20.5M | 149 | 53 |
| Lawn, cleaning and pest control | 71 | #207 of 1,771 | 650 | 6.9 | $2.4M | 144 | 1,595 |
| Primary care and pediatrics | 71 | #238 of 1,656 | 584 | 6.2 | $2.6M | 148 | 1,206 |
| Gas stations | 71 | #364 of 2,358 | 630 | 6.7 | $3.5M | 145 | 393 |
| Gyms | 70 | #220 of 1,792 | 782 | 8.3 | $2.1M | 163 | 422 |
| Clothing and shoe stores | 68 | #440 of 2,087 | 1,187 | 12.6 | $1.9M | 147 | 601 |
| Pet stores | 66 | #223 of 974 | 213 | 2.3 | $5.8M | 128 | 120 |
| Martial arts and dance studios | 66 | #233 of 1,334 | 529 | 5.6 | $3.1M | 155 | 567 |
| Gyms, studios and classes | 66 | #366 of 2,088 | 1,713 | 18.2 | $969K | 146 | 989 |
| Optometrists and eye care | 65 | #302 of 1,302 | 440 | 4.7 | $3.5M | 111 | 198 |
| Child care and preschools | 64 | #419 of 1,611 | 816 | 8.7 | $1.3M | 125 | 994 |
| Hair salons | 64 | #485 of 2,339 | 2,028 | 21.6 | $597K | 139 | 856 |
| Clothing, shoes and laundry | 63 | #600 of 2,210 | 1,771 | 18.8 | $1.3M | 142 | 771 |
| House cleaning | 62 | #197 of 847 | 215 | 2.3 | $7.3M | 115 | 708 |
| Nail salons | 60 | #396 of 1,328 | 524 | 5.6 | $2.3M | 138 | 434 |
| Bakeries and dessert shops | 60 | #537 of 1,889 | 871 | 9.3 | $5.6M | 134 | 1,098 |
| Dry cleaners | 59 | #174 of 507 | 114 | 1.2 | $19.5M | 124 | 136 |
| Physical therapy | 59 | #478 of 1,422 | 589 | 6.3 | $2.6M | 109 | 467 |
| Grocery stores | 58 | #754 of 2,070 | 761 | 8.1 | $8.7M | 94 | 499 |
| Salons, barbers and spas | 57 | #787 of 2,385 | 4,262 | 45.3 | $284K | 134 | 1,664 |
| Yoga, Pilates and fitness studios | 56 | #267 of 777 | 402 | 4.3 | $4.1M | 102 | 422 |
| Chiropractors | 56 | #579 of 1,490 | 694 | 7.4 | $2.2M | 93 | 404 |
| Spas and skin care | 54 | #743 of 1,769 | 1,242 | 13.2 | $975K | 111 | 269 |
| Restaurants and cafes | 53 | #1,060 of 2,405 | 12,302 | 130.7 | $394K | 106 | 5,403 |
| Property management | 52 | #402 of 910 | 357 | 3.8 | Index only | 104 | 952 |
| Sit-down restaurants | 51 | #1,137 of 2,405 | 6,809 | 72.4 | $711K | 107 | 2,618 |
| Mortgage brokers and lenders | 45 | #534 of 887 | 632 | 6.7 | Index only | 84 | 279 |
| Doctors, dentists and clinics | 45 | #1,436 of 2,394 | 9,838 | 104.5 | $156K | 102 | 3,758 |
| Insurance agencies | 42 | #1,402 of 2,272 | 1,193 | 12.7 | $1.3M | 101 | 824 |
| Coffee shops and cafes | 41 | #1,356 of 2,063 | 1,820 | 19.3 | $2.7M | 72 | 1,000 |
| Real estate agents and brokers | 41 | #1,540 of 2,176 | 3,899 | 41.4 | Index only | 97 | 2,276 |
| Real estate | 40 | #1,630 of 2,229 | 4,948 | 52.6 | Index only | 97 | 3,892 |
| Dentists and orthodontists | 39 | #1,337 of 1,886 | 1,778 | 18.9 | $864K | 88 | 1,434 |
Household spending in King County
What households here spend in a year on each line, in total and per household, with the index against the U.S. average (100).
| Spending line | A year, all households | Per household | Index vs. U.S. (100) |
|---|---|---|---|
| Vehicle maintenance and repairs | $921.9M | $980 | 102 |
| Gasoline and other fuels | $2.2B | $2,315 | 89 |
| Food away from home | $4.8B | $5,148 | 126 |
| Groceries | $6.6B | $7,038 | 111 |
| Personal care products and services | $1.2B | $1,286 | 128 |
| Child care and other personal services | $1B | $1,089 | 187 |
| Memberships, classes and admissions | $1.7B | $1,763 | 179 |
| Medical and dental services | $1.5B | $1,632 | 127 |
| Pets | $1.2B | $1,311 | 144 |
| Clothing, shoes and related services | $2.2B | $2,357 | 115 |
| Vehicle insurance | $1.5B | $1,615 | 83 |
| Home repairs, maintenance and insurance | $3.4B | $3,659 | 121 |
| Lawn care, cleaning and other household services | $1.6B | $1,675 | 118 |
| Rent and homeowner costs | $20.7B | $22,002 | 132 |
Household spending is estimated from the incomes of the households in each neighborhood, using what households at each income spent nationally in 2024, adjusted for the region. It counts what residents spend, wherever they spend it.
Population and households in King County
- Population, 2025 estimate
- 2,344,939+3.1% since 2020
- Households
- 941,054
- Median age
- 38.8
- Homes lived in by their owners
- 55%
- Vehicles per household
- 1.6
- Land area
- 2,116 sq. mi.
- People per square mile
- 1,081
- Median household income
- $124,746+31.4% vs. 2015–2019, before inflation
- Average household income
- $176,807
- Median home value
- $859,900
- Jobs located here
- 1,503,962
- Daytime population
- 2,645,877Residents who don’t work, plus everyone whose job is here
Looking at a specific site in King County?
These figures cover the whole county. A site report draws rings around one address and counts what’s inside them: households, spending, jobs, and the competitors on map listings by name and distance, for any of the 56 business types.
Or open the report at the center of King County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardRelated markets
Nearest counties in Washington 8
- Kitsap County, WA277,881 people
- Snohomish County, WA844,430 people
- Pierce County, WA930,319 people
- Mason County, WA67,982 people
- Jefferson County, WA33,577 people
- Thurston County, WA299,067 people
- Island County, WA86,836 people
- Skagit County, WA131,328 people
Questions
How fast is King County, WA growing?
Population estimates put King County at 2,344,939 people in 2025, up 3.1% since 2020, in step with the U.S. (+3.1%). It has 941,054 households. Median household income rose 31.4% from the 2015–2019 survey, before inflation.
How much do households in King County, WA spend?
Households in King County spend about $20.7B a year on rent and homeowner costs, $6.6B on groceries and $4.8B on food away from home. Set against the U.S., households in King County spend the most on child care and other personal services (an index of 187, where 100 is the U.S. average) and the least on vehicle insurance (83).
Which business types have the highest market scores in King County, WA?
The highest Groundwork market scores in King County are for HVAC and plumbing companies (89), laundromats (87) and convenience stores (87). King County ranks #11 of 1,707 scored counties for HVAC and plumbing companies.
How does King County, WA compare with the U.S.?
The median household income in King County is $124,746 a year, 55% above the U.S. median of $80,734. The population rose 3.1% from 2020 to 2025, against +3.1% for the U.S. The median home value is $859,900, against $332,700 for the U.S. For its number of households, King County has the most map listings, relative to the U.S., for yoga, Pilates and fitness studios (79% above the U.S. rate) and the fewest for funeral homes (71% below the U.S. rate).
What is the Groundwork market score?
The Groundwork market score runs from 0 to 100 and compares a market with others of its kind for one business type: states with states, metro areas with metro areas, small-town markets and counties with their own. It weighs household spending per competitor (35%), households per business with payroll (25%), population growth (20%) and spending power (20%), each ranked against those peers. A higher score means that, taken together, the market has more household spending and more households for each business already there, faster population growth and more spending per household than similar markets. It describes a market, not any one site or deal. All 56 business types have a score in King County, each ranked against other counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in King County. It maps the competitors on map listings near the site and sizes the households and spending within the distance you choose. New accounts get 10 actions over 3 days, no card.
All markets in Washington · Every U.S. market · How we measure
Screening a site or an acquisition in King County?
A site report maps the competitors on map listings near an address and sizes the households and spending around it.
The button opens the report at the center of King County. Signed out, you see a blurred preview; on an account, each report is one action.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are estimates for research only. Not investment or real estate advice.