Auto · County · Illinois
Insurance agencies in Mercer County, IL
How Mercer County, IL compares with other counties and the U.S. for insurance agencies: competitors, household spending, official counts and growth.
Groundwork market score · out of 100
Score 35 out of 100: Lower middle
Ranked #1,630 of 2,272 scored counties
#6 of 87 scored counties in Illinois
- Listings
- 7
- 1 chain location (14%)
- Official establishments
- 11
- Businesses with payroll, 2023
- Household spending a year
- $12.6M
- On vehicle insurance · $1,914 a household
- Spending per listing
- $1.8M
- 43% above the U.S.
- Listings per 10k households
- 10.7
- 31% below the U.S.
- Population, 2025
- 15,229
- −2.6% since 2020
See the insurance agencies around any address in Mercer County
The site report maps the insurance agencies on map listings near the address, by name and distance, and sizes the households and spending around it. Or open the report at the center of Mercer 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
Map listings as of September 2026 show 7 insurance agencies in Mercer County. One of them (14%) is a chain location, against 21% across the U.S. That is 10.7 per 10,000 households, 31% below the U.S. rate of 15.6.
Household spending on vehicle insurance in Mercer County comes to about $12.6M a year: $1,914 per household, 2% below the U.S. average. That works out to $1.8M per agency, 43% above the U.S. figure of $1.3M.
The official count of businesses with payroll classed as insurance agencies and brokerages in Mercer County was 11 in 2023. That is one for every 597 households, against one for every 966 across the U.S.
Population estimates show Mercer County declined 2.6% from 2020 to 2025, against +3.1% for the U.S. The Groundwork market score for insurance agencies in Mercer County is 35 (lower middle), #1,630 of 2,272 scored counties and #6 of 87 scored counties in Illinois.
How Mercer County compares
The same measures for Illinois and the whole U.S. Spending per listing divides a year of household spending on all vehicle insurance by the insurance agencies counted, so it measures the demand for each competitor, not any business’s revenue. Households per establishment does the same with the official count.
| Measure | Mercer County | Illinois | U.S. |
|---|---|---|---|
| Listings per 10k households | 10.7 | 18.2 | 15.6 |
| Spending per listing | $1.8M | $795K | $1.3M |
| Households per official establishment | 597 | 887 | 966 |
| Official establishment growth, 2019–2023 | n/a | −7.0% | −1.0% |
| Population growth, 2020–2025 | −2.6% | −0.6% | +3.1% |
| Spending per household on vehicle insurance | $1,914 | $1,450 | $1,957 |
| Median household income | $74,182 | $83,390 | $80,734 |
| Groundwork market score | 35 | 11 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 13 → 11
- Employees, 2023
- 37
- Annual payroll, 2023
- $1.4M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 71 chain location
- Listings at the U.S. rate for this spending
- 10The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 0
- Amount
- $0
SBA-backed loans to businesses classed as insurance agencies and brokerages in Mercer County, through June 2026, placed by the borrower’s ZIP code. Official establishments are businesses with payroll; the official counts leave out places with fewer than 3.
Population and households in Mercer County
- Population, 2025 estimate
- 15,229−2.6% since 2020
- Households
- 6,565
- Median age
- 43.9
- Homes lived in by their owners
- 84%
- Vehicles per household
- 2.2
- Land area
- 561 sq. mi.
- People per square mile
- 28
- Median household income
- $74,182+24.1% vs. 2015–2019, before inflation
- Average household income
- $92,846
- Median home value
- $146,700
- Jobs located here
- 3,052
- Daytime population
- 11,354Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Mercer 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 insurance agencies on map listings by name and distance.
Or open the report at the center of Mercer County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardInsurance agencies across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for insurance agencies, numbered among those based in Illinois, with Mercer County marked.
Top counties in Illinois
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Kendall County, IL | 59 | 56 | 12.3 | $1.5M | +9.9% | #816 of 2,272 |
| 2Boone County, IL | 48 | 21 | 10.8 | $1.7M | +0.4% | #1,169 of 2,272 |
| 3Will County, IL | 40 | 372 | 15.2 | $1.2M | +2.2% | #1,464 of 2,272 |
| 4DeKalb County, IL | 39 | 47 | 11.9 | $1.3M | +1.5% | #1,499 of 2,272 |
| 5Piatt County, IL | 36 | 10 | 14.4 | $1.3M | +0.6% | #1,598 of 2,272 |
| 6Mercer County, IL | 35 | 7 | 10.7 | $1.8M | −2.6% | #1,630 of 2,272 |
| 7Grundy County, IL | 35 | 35 | 17.0 | $1.1M | +2.9% | #1,654 of 2,272 |
| 8McHenry County, IL | 35 | 209 | 17.8 | $1M | +2.5% | #1,660 of 2,272 |
| 9Menard County, IL | 34 | 5 | 9.6 | $1.8M | −3.3% | #1,667 of 2,272 |
| 10Jo Daviess County, IL | 33 | 11 | 10.6 | $1.6M | −2.2% | #1,698 of 2,272 |
Other business types in Mercer County
Each with its Groundwork market score here, out of 100, where it has one.
Food and drink
Groceries and convenience
Auto
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many insurance agencies are in Mercer County, IL?
There are 7 insurance agencies on map listings in Mercer County as of September 2026. One of them (14%) is a chain location. The listings count insurance agencies. Official counts show 11 businesses with payroll classed as insurance agencies and brokerages in 2023.
How much do households in Mercer County, IL spend on vehicle insurance?
About $12.6M a year, or $1,914 per household. That is 2% below the U.S. average (an index of 98, where 100 is the U.S. average). Spread across the 7 insurance agencies on map listings, it comes to $1.8M per agency. It is estimated from the incomes of the 6,565 households in Mercer County and national spending patterns by income.
How does Mercer County, IL compare with the U.S. for insurance agencies?
Mercer County has 10.7 insurance agencies per 10,000 households, 31% below the U.S. rate of 15.6. Spending per agency is $1.8M, 43% above the U.S. figure of $1.3M. At the national ratio of insurance agencies to household spending, Mercer County would have about 10, against 7 on map listings. There is one business with payroll in the industry for every 597 households, against one for every 966 across the U.S.
How fast is Mercer County, IL growing?
Population estimates put Mercer County at 15,229 people in 2025, down 2.6% since 2020, against +3.1% for the U.S. It has 6,565 households. The median household income in Mercer County is $74,182 a year, 8% below the U.S. median of $80,734. That rose 24.1% from the 2015–2019 survey, before inflation.
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. Mercer County scores 35 for insurance agencies (lower middle), #1,630 of 2,272 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Mercer County. It maps the insurance agencies 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.
How the score works · Top markets for insurance agencies · All 56 business types in Mercer County
Screening a site or an acquisition in Mercer 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 Mercer 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.