County profile · South Carolina
Marion County, SC market data
How Marion County compares with other counties for 56 business types: competitors, household spending, official counts and growth.
- Population, 2025
- 28,242
- −2.9% since 2020
- Households
- 12,177
- Median household income
- $36,301
- +13.2% vs. 2015–2019, before inflation
- Median home value
- $93,200
- Jobs located here
- 6,602
- Highest market score
- 64
- Insurance agencies, #638 of 2,272 scored counties
A site report maps the competitors on map listings around any address in Marion County by name and distance, and the households and spending within reach. Or open the report at the center of Marion 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
Marion County has an estimated 28,242 people and 12,177 households. Population estimates show Marion County declined 2.9% from 2020 to 2025, against +3.1% for the U.S. Median household income in Marion County is $36,301, 55% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 13.2%, before inflation.
Relative to the U.S., household spending in Marion County runs highest on vehicle insurance (an index of 104, where 100 is the U.S. average) and lowest on memberships, classes and admissions (40).
Of the business types scored in Marion County, insurance agencies (64), real estate businesses (59) and dentists and orthodontists (54) have the highest Groundwork market scores. For insurance agencies, that ranks #638 of 2,272 scored counties.
Against the U.S., map listings per household run highest for funeral homes (3.9 times the U.S. rate) and lowest for medical and dental practices (43% below the U.S. rate).
All 56 business types in Marion County
Highest Groundwork market score first. Each score compares Marion 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 |
|---|---|---|---|---|---|---|---|
| Insurance agencies | 64 | #638 of 2,272 | 8 | 6.6 | $3.1M | 246 | 8 |
| Real estate | 59 | #586 of 2,229 | 8 | 6.6 | Index only | 415 | 5 |
| Dentists and orthodontists | 54 | #777 of 1,886 | 6 | 4.9 | $1.7M | 170 | 4 |
| Real estate agents and brokers | 48 | #1,129 of 2,176 | 6 | 4.9 | Index only | 439 | Under 3 |
| HVAC and plumbing | 45 | #1,015 of 1,707 | 5 | 4.1 | $5.1M | 108 | 8 |
| Home repair trades | 45 | #1,262 of 2,057 | 10 | 8.2 | $2.6M | 106 | 13 |
| Pet businesses | 45 | #1,308 of 2,200 | 7 | 5.7 | $1.1M | 120 | Under 3 |
| Gyms, studios and classes | 44 | #1,332 of 2,088 | 5 | 4.1 | $960K | 145 | Under 3 |
| Bakeries and dessert shops | 43 | #1,167 of 1,889 | 5 | 4.1 | $6.4M | 154 | Under 3 |
| Coffee shops and cafes | 39 | #1,414 of 2,063 | 6 | 4.9 | $5.3M | 144 | Under 3 |
| Auto repair shops | 36 | #1,819 of 2,378 | 23 | 18.9 | $369K | 83 | 5 |
| Primary care and pediatrics | 35 | #1,271 of 1,656 | 7 | 5.7 | $1.4M | 81 | 7 |
| Sit-down restaurants | 35 | #1,827 of 2,405 | 49 | 40.2 | $652K | 98 | 14 |
| Doctors, dentists and clinics | 35 | #1,878 of 2,394 | 59 | 48.5 | $170K | 112 | 14 |
| Restaurants and cafes | 31 | #1,973 of 2,405 | 93 | 76.4 | $343K | 93 | 41 |
| Auto repair and car care | 31 | #2,001 of 2,401 | 41 | 33.7 | $207K | 77 | 11 |
| Clothing, shoes and laundry | 27 | #1,925 of 2,210 | 27 | 22.2 | $638K | 72 | 4 |
| Clothing and shoe stores | 26 | #1,814 of 2,087 | 20 | 16.4 | $861K | 68 | 4 |
| Pizza | 25 | #1,903 of 2,090 | 9 | 7.4 | $3.5M | 70 | 23 |
| Physical therapy | 19 | #1,351 of 1,422 | 5 | 4.1 | $2M | 84 | Under 3 |
| Tire shops | 19 | #1,402 of 1,530 | 5 | 4.1 | $1.7M | 68 | 3 |
| Gas stations | 19 | #2,232 of 2,358 | 28 | 23.0 | $1M | 43 | 15 |
| Hair salons | 17 | #2,257 of 2,339 | 20 | 16.4 | $390K | 91 | Under 3 |
| Fast food and sandwich shops | 15 | #2,138 of 2,222 | 20 | 16.4 | $1.6M | 52 | 23 |
| Funeral homes | 14 | #1,453 of 1,472 | 10 | 8.2 | $181K | 27 | 8 |
| Salons, barbers and spas | 12 | #2,358 of 2,385 | 40 | 32.8 | $195K | 92 | Under 3 |
| Grocery stores | 11 | #2,011 of 2,070 | 20 | 16.4 | $3M | 32 | 6 |
| Convenience stores | 10 | #2,192 of 2,261 | 17 | 14.0 | $3.5M | 44 | 8 |
| Grocery and convenience stores | 7 | #2,382 of 2,402 | 39 | 32.0 | $1.5M | 45 | 14 |
| Child care and preschools | 4 | #1,607 of 1,611 | 11 | 9.0 | $290K | 29 | 12 |
| Barbershops | 2 | #1,354 of 1,356 | 12 | 9.9 | $651K | 35 | Under 3 |
| Car washes and detailing | Not scored | Not scored | 4 | 3.3 | $2.1M | 84 | Under 3 |
| Lawn, cleaning and pest control | Not scored | Not scored | 4 | 3.3 | $3.4M | 201 | 4 |
| Nail salons | Not scored | Not scored | 4 | 3.3 | $2M | 117 | Under 3 |
| Spas and skin care | Not scored | Not scored | 4 | 3.3 | $2M | 223 | Under 3 |
| Chiropractors | Not scored | Not scored | 3 | 2.5 | $3.4M | 140 | 3 |
| Collision repair and body shops | Not scored | Not scored | 3 | 2.5 | $2.8M | 92 | Under 3 |
| Dry cleaners | Not scored | Not scored | 3 | 2.5 | $5.7M | 37 | Under 3 |
| Gyms | Not scored | Not scored | 3 | 2.5 | $1.6M | 123 | Under 3 |
| Landscaping and lawn care | Not scored | Not scored | 3 | 2.5 | $4.5M | 154 | 4 |
| Pet grooming and boarding | Not scored | Not scored | 3 | 2.5 | $2.5M | 96 | Under 3 |
| Roofing and gutters | Not scored | Not scored | 3 | 2.5 | $8.6M | 101 | Under 3 |
| Electricians | Not scored | Not scored | 2 | 1.6 | $12.8M | Too few | 5 |
| Martial arts and dance studios | Not scored | Not scored | 2 | 1.6 | $2.4M | Too few | Under 3 |
| Mortgage brokers and lenders | Not scored | Not scored | 2 | 1.6 | Index only | Too few | Under 3 |
| Laundromats | Not scored | Not scored | 1 | 0.8 | $17.2M | Too few | Under 3 |
| Optometrists and eye care | Not scored | Not scored | 1 | 0.8 | $10.1M | Too few | Under 3 |
| Pest control | Not scored | Not scored | 1 | 0.8 | $13.5M | Too few | Under 3 |
| Pet stores | Not scored | Not scored | 1 | 0.8 | $7.4M | Too few | Under 3 |
| Veterinarians | Not scored | Not scored | 1 | 0.8 | $7.4M | Too few | Under 3 |
| Home inspectors | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| House cleaning | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Oil change and quick lube | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Property management | Not scored | Not scored | 0 | 0.0 | None listed | None listed | 3 |
| Urgent care and walk-in clinics | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Yoga, Pilates and fitness studios | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
Household spending in Marion 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 | $8.5M | $696 | 73 |
| Gasoline and other fuels | $28.9M | $2,371 | 91 |
| Food away from home | $31.9M | $2,622 | 64 |
| Groceries | $59.3M | $4,873 | 77 |
| Personal care products and services | $7.8M | $641 | 64 |
| Child care and other personal services | $3.2M | $262 | 45 |
| Memberships, classes and admissions | $4.8M | $394 | 40 |
| Medical and dental services | $10.1M | $826 | 64 |
| Pets | $7.4M | $605 | 67 |
| Clothing, shoes and related services | $17.2M | $1,414 | 69 |
| Vehicle insurance | $24.7M | $2,032 | 104 |
| Home repairs, maintenance and insurance | $25.7M | $2,107 | 70 |
| Lawn care, cleaning and other household services | $13.5M | $1,109 | 78 |
| Rent and homeowner costs | $143.8M | $11,806 | 71 |
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 Marion County
- Population, 2025 estimate
- 28,242−2.9% since 2020
- Households
- 12,177
- Median age
- 41.3
- Homes lived in by their owners
- 63%
- Vehicles per household
- 1.6
- Land area
- 489 sq. mi.
- People per square mile
- 59
- Median household income
- $36,301+13.2% vs. 2015–2019, before inflation
- Average household income
- $51,314
- Median home value
- $93,200
- Jobs located here
- 6,602
- Daytime population
- 24,018Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Marion 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 Marion 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 South Carolina 8
- Dillon County, SC27,862 people
- Florence County, SC137,117 people
- Horry County, SC383,016 people
- Marlboro County, SC25,975 people
- Darlington County, SC62,558 people
- Williamsburg County, SC30,282 people
- Georgetown County, SC64,811 people
- Lee County, SC16,166 people
Questions
How fast is Marion County, SC growing?
Population estimates put Marion County at 28,242 people in 2025, down 2.9% since 2020, against +3.1% for the U.S. It has 12,177 households. Median household income rose 13.2% from the 2015–2019 survey, before inflation.
How much do households in Marion County, SC spend?
Households in Marion County spend about $143.8M a year on rent and homeowner costs, $59.3M on groceries and $31.9M on food away from home. Set against the U.S., households in Marion County spend the most on vehicle insurance (an index of 104, where 100 is the U.S. average) and the least on memberships, classes and admissions (40).
Which business types have the highest market scores in Marion County, SC?
The highest Groundwork market scores in Marion County are for insurance agencies (64), real estate businesses (59) and dentists and orthodontists (54). Marion County ranks #638 of 2,272 scored counties for insurance agencies.
How does Marion County, SC compare with the U.S.?
The median household income in Marion County is $36,301 a year, 55% below the U.S. median of $80,734. The population fell 2.9% from 2020 to 2025, against +3.1% for the U.S. The median home value is $93,200, against $332,700 for the U.S. For its number of households, Marion County has the most map listings, relative to the U.S., for funeral homes (3.9 times the U.S. rate) and the fewest for medical and dental practices (43% 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. 31 of the 56 business types have a score in Marion 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 Marion 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 South Carolina · Every U.S. market · How we measure
Screening a site or an acquisition in Marion 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 Marion 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.