County profile · Ohio
Seneca County, OH market data
How Seneca County compares with other counties for 56 business types: competitors, household spending, official counts and growth.
- Population, 2025
- 54,522
- −1.0% since 2020
- Households
- 22,279
- Median household income
- $66,025
- +25.8% vs. 2015–2019, before inflation
- Median home value
- $154,700
- Jobs located here
- 18,247
- Highest market score
- 72
- Collision repair and body shops, #168 of 1,327 scored counties
A site report maps the competitors on map listings around any address in Seneca County by name and distance, and the households and spending within reach. Or open the report at the center of Seneca 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
Seneca County has an estimated 54,522 people and 22,279 households. Population estimates put the population change in Seneca County from 2020 to 2025 at −1.0%, against +3.1% for the U.S. Median household income in Seneca County is $66,025, 18% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 25.8%, before inflation.
Relative to the U.S., household spending in Seneca County runs highest on vehicle maintenance and repairs (an index of 114, where 100 is the U.S. average) and lowest on child care and other personal services (57).
Of the business types scored in Seneca County, collision repair and body shops (72), optometrists and eye clinics (67) and dentists and orthodontists (67) have the highest Groundwork market scores. For collision repair and body shops, that ranks #168 of 1,327 scored counties.
Seneca County is part of the Tiffin area. Against the U.S., map listings per household run highest for pizza places (46% above the U.S. rate) and lowest for clothing and shoe stores (61% below the U.S. rate).
All 56 business types in Seneca County
Highest Groundwork market score first. Each score compares Seneca 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 |
|---|---|---|---|---|---|---|---|
| Collision repair and body shops | 72 | #168 of 1,327 | 5 | 2.2 | $4.8M | 157 | 4 |
| Optometrists and eye care | 67 | #249 of 1,302 | 5 | 2.2 | $5.7M | 184 | Under 3 |
| Dentists and orthodontists | 67 | #329 of 1,886 | 13 | 5.8 | $2.2M | 225 | 13 |
| Clothing, shoes and laundry | 67 | #447 of 2,210 | 20 | 9.0 | $2M | 226 | 6 |
| Clothing and shoe stores | 66 | #478 of 2,087 | 14 | 6.3 | $2.8M | 224 | 6 |
| Pet businesses | 65 | #461 of 2,200 | 16 | 7.2 | $1M | 119 | 5 |
| Physical therapy | 62 | #388 of 1,422 | 9 | 4.0 | $3.2M | 133 | 6 |
| Tire shops | 59 | #541 of 1,530 | 8 | 3.6 | $3M | 121 | 4 |
| Veterinarians | 58 | #529 of 1,485 | 5 | 2.2 | $3.3M | 123 | 5 |
| Real estate agents and brokers | 58 | #642 of 2,176 | 27 | 12.1 | Index only | 198 | 3 |
| Car washes and detailing | 57 | #542 of 1,451 | 10 | 4.5 | $2.4M | 96 | 3 |
| Coffee shops and cafes | 57 | #710 of 2,063 | 9 | 4.0 | $8.6M | 233 | 13 |
| Grocery stores | 56 | #798 of 2,070 | 9 | 4.0 | $14.1M | 152 | 10 |
| Primary care and pediatrics | 55 | #691 of 1,656 | 17 | 7.6 | $1.7M | 95 | 14 |
| Doctors, dentists and clinics | 55 | #956 of 2,394 | 121 | 54.3 | $238K | 156 | 45 |
| Spas and skin care | 53 | #758 of 1,769 | 14 | 6.3 | $1.4M | 164 | Under 3 |
| Real estate | 53 | #918 of 2,229 | 40 | 18.0 | Index only | 168 | 3 |
| Gyms, studios and classes | 52 | #970 of 2,088 | 27 | 12.1 | $606K | 92 | 4 |
| Auto repair and car care | 52 | #1,122 of 2,401 | 80 | 35.9 | $303K | 113 | 37 |
| Restaurants and cafes | 51 | #1,130 of 2,405 | 183 | 82.1 | $425K | 115 | 85 |
| Gyms | 50 | #922 of 1,792 | 15 | 6.7 | $1.1M | 84 | 4 |
| Fast food and sandwich shops | 50 | #1,141 of 2,222 | 28 | 12.6 | $2.8M | 91 | 33 |
| Sit-down restaurants | 50 | #1,157 of 2,405 | 93 | 41.7 | $836K | 126 | 39 |
| Pet grooming and boarding | 49 | #754 of 1,461 | 6 | 2.7 | $2.8M | 109 | Under 3 |
| Bakeries and dessert shops | 48 | #982 of 1,889 | 15 | 6.7 | $5.2M | 125 | 13 |
| Gas stations | 48 | #1,259 of 2,358 | 29 | 13.0 | $2.2M | 90 | 25 |
| Grocery and convenience stores | 48 | #1,275 of 2,402 | 38 | 17.1 | $3.3M | 99 | 16 |
| Auto repair shops | 48 | #1,280 of 2,378 | 51 | 22.9 | $475K | 107 | 28 |
| Barbershops | 46 | #798 of 1,356 | 9 | 4.0 | $2.2M | 119 | Under 3 |
| Salons, barbers and spas | 46 | #1,397 of 2,385 | 79 | 35.5 | $255K | 120 | 16 |
| Convenience stores | 45 | #1,298 of 2,261 | 22 | 9.9 | $5.8M | 73 | 6 |
| Lawn, cleaning and pest control | 41 | #1,215 of 1,771 | 18 | 8.1 | $1.4M | 83 | 17 |
| Child care and preschools | 40 | #1,112 of 1,611 | 12 | 5.4 | $610K | 61 | 4 |
| Landscaping and lawn care | 39 | #1,036 of 1,493 | 11 | 4.9 | $2.3M | 78 | 17 |
| Pizza | 39 | #1,489 of 2,090 | 26 | 11.7 | $3M | 59 | 33 |
| Insurance agencies | 38 | #1,524 of 2,272 | 28 | 12.6 | $1.4M | 109 | 20 |
| Martial arts and dance studios | 37 | #995 of 1,334 | 9 | 4.0 | $1.8M | 90 | Under 3 |
| HVAC and plumbing | 36 | #1,347 of 1,707 | 17 | 7.6 | $3.3M | 69 | 14 |
| Hair salons | 34 | #1,903 of 2,339 | 51 | 22.9 | $394K | 92 | 15 |
| Funeral homes | 32 | #1,173 of 1,472 | 8 | 3.6 | $398K | 59 | 7 |
| Chiropractors | 29 | #1,294 of 1,490 | 17 | 7.6 | $1.7M | 71 | 12 |
| Home repair trades | 29 | #1,868 of 2,057 | 34 | 15.3 | $1.6M | 67 | 33 |
| Roofing and gutters | 28 | #1,020 of 1,177 | 8 | 3.6 | $7M | 82 | 7 |
| Electricians | 28 | #1,022 of 1,160 | 9 | 4.0 | $6.2M | 52 | 12 |
| Mortgage brokers and lenders | 13 | #882 of 887 | 11 | 4.9 | Index only | 68 | Under 3 |
| Laundromats | Not scored | Not scored | 4 | 1.8 | $9.9M | 80 | Under 3 |
| Nail salons | Not scored | Not scored | 4 | 1.8 | $5M | 301 | Under 3 |
| Pest control | Not scored | Not scored | 4 | 1.8 | $6.3M | 61 | Under 3 |
| House cleaning | Not scored | Not scored | 3 | 1.3 | $8.4M | 131 | Under 3 |
| Urgent care and walk-in clinics | Not scored | Not scored | 3 | 1.3 | $9.6M | 39 | Under 3 |
| Yoga, Pilates and fitness studios | Not scored | Not scored | 3 | 1.3 | $5.5M | 134 | 4 |
| Property management | Not scored | Not scored | 2 | 0.9 | Index only | Too few | Under 3 |
| Oil change and quick lube | Not scored | Not scored | 1 | 0.4 | $24.2M | Too few | Under 3 |
| Pet stores | Not scored | Not scored | 1 | 0.4 | $16.7M | Too few | Under 3 |
| Dry cleaners | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Home inspectors | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
Household spending in Seneca 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 | $24.2M | $1,088 | 114 |
| Gasoline and other fuels | $62.6M | $2,809 | 108 |
| Food away from home | $77.8M | $3,492 | 86 |
| Groceries | $127.2M | $5,709 | 90 |
| Personal care products and services | $20.1M | $903 | 90 |
| Child care and other personal services | $7.3M | $329 | 57 |
| Memberships, classes and admissions | $16.4M | $735 | 75 |
| Medical and dental services | $28.7M | $1,290 | 100 |
| Pets | $16.7M | $750 | 82 |
| Clothing, shoes and related services | $39.8M | $1,785 | 87 |
| Vehicle insurance | $38.2M | $1,713 | 88 |
| Home repairs, maintenance and insurance | $55.7M | $2,498 | 83 |
| Lawn care, cleaning and other household services | $25.1M | $1,129 | 80 |
| Rent and homeowner costs | $291.5M | $13,085 | 79 |
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 Seneca County
- Population, 2025 estimate
- 54,522−1.0% since 2020
- Households
- 22,279
- Median age
- 41.1
- Homes lived in by their owners
- 73%
- Vehicles per household
- 1.9
- Land area
- 551 sq. mi.
- People per square mile
- 99
- Median household income
- $66,025+25.8% vs. 2015–2019, before inflation
- Average household income
- $82,475
- Median home value
- $154,700
- Jobs located here
- 18,247
- Daytime population
- 47,872Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Seneca 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 Seneca County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardRelated markets
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Questions
How fast is Seneca County, OH growing?
Population estimates put Seneca County at 54,522 people in 2025, down 1.0% since 2020, against +3.1% for the U.S. It has 22,279 households. Median household income rose 25.8% from the 2015–2019 survey, before inflation.
How much do households in Seneca County, OH spend?
Households in Seneca County spend about $291.5M a year on rent and homeowner costs, $127.2M on groceries and $77.8M on food away from home. Set against the U.S., households in Seneca County spend the most on vehicle maintenance and repairs (an index of 114, where 100 is the U.S. average) and the least on child care and other personal services (57).
Which business types have the highest market scores in Seneca County, OH?
The highest Groundwork market scores in Seneca County are for collision repair and body shops (72), optometrists and eye clinics (67) and dentists and orthodontists (67). Seneca County ranks #168 of 1,327 scored counties for collision repair and body shops.
How does Seneca County, OH compare with the U.S.?
The median household income in Seneca County is $66,025 a year, 18% below the U.S. median of $80,734. The population fell 1.0% from 2020 to 2025, against +3.1% for the U.S. The median home value is $154,700, against $332,700 for the U.S. For its number of households, Seneca County has the most map listings, relative to the U.S., for pizza places (46% above the U.S. rate) and the fewest for clothing and shoe stores (61% 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. 45 of the 56 business types have a score in Seneca 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 Seneca 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.
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Screening a site or an acquisition in Seneca 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 Seneca 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.