Real estate · County · New Jersey
Real estate businesses in Mercer County, NJ
Competitor counts, household spending and official business counts for real estate businesses in Mercer County, NJ, set against other counties and the U.S.
Groundwork market score · out of 100
Score 58 out of 100: Upper middle
Ranked #684 of 2,229 scored counties
#11 of 21 scored counties in New Jersey
- Listings
- 491
- 40 chain locations (8%)
- Official establishments
- 210
- +12.9% since 2019
- Household spending a year
- $2.9B
- On rent and homeowner costs · $20,218 a household
- Housing spending per listing (U.S. = 100)
- 137
- 37% above the U.S.
- Listings per 10k households
- 34.1
- 11% below the U.S.
- Population, 2025
- 399,289
- +3.3% since 2020
See the real estate businesses around any address in Mercer County
The site report maps the real estate businesses 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
At $20,218 per household (21% above the U.S. average), households in Mercer County spend about $2.9B a year on rent and homeowner costs. Housing spending per office is 37% above the U.S. figure. The spending figure is all rent and homeowner costs, a measure of housing demand, not money real estate businesses take in.
There are 491 real estate businesses on map listings in Mercer County as of September 2026. Of those, 40 are chain locations, or 8%, against 6% across the U.S. That comes to 34.1 for every 10,000 households, 11% below the U.S. rate of 38.5.
Official counts show 210 businesses with payroll classed as real estate agents, property managers, mortgage lenders and inspectors in Mercer County in 2023, up 12.9% from 2019. That is one for every 686 households, against one for every 414 across the U.S. Another 1,676 one-person businesses have no payroll, by official counts. Since fiscal 2022, 3 SBA-backed loans worth $205K have gone to businesses classed as real estate agents, property managers, mortgage lenders and inspectors in Mercer County.
Population estimates show Mercer County grew 3.3% from 2020 to 2025, in step with the U.S. (+3.1%). Mercer County scores 58 (upper middle) on the Groundwork market score for real estate businesses, ranking #684 of 2,229 scored counties and #11 of 21 scored counties in New Jersey.
How Mercer County compares
The same measures for New Jersey and the whole U.S. Housing spending per listing divides all rent and homeowner costs by the listings counted: a measure of housing demand for each business, not money any of them take in, so it is shown against the U.S. (100) only. Households per establishment divides households by the official count.
| Measure | Mercer County | New Jersey | U.S. |
|---|---|---|---|
| Listings per 10k households | 34.1 | 36.2 | 38.5 |
| Housing spending per listing (U.S. = 100) | 137 | 130 | 100 |
| Households per official establishment | 686 | 595 | 414 |
| Official establishment growth, 2019–2023 | +12.9% | +7.3% | +15.8% |
| Population growth, 2020–2025 | +3.3% | +3.0% | +3.1% |
| Spending per household on rent and homeowner costs | $20,218 | $20,430 | $16,661 |
| Median household income | $100,645 | $103,556 | $80,734 |
| Groundwork market score | 58 | 81 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 186 → 210+12.9% over the period
- Employees, 2023
- 1,499
- Annual payroll, 2023
- $121.5M
- One-person businesses, 2023
- 1,676Businesses with no payroll
- Map listings, September 2026
- 49140 chain locations
- Listings at the U.S. rate for this spending
- 673The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 3
- Amount
- $205K
SBA-backed loans to businesses classed as real estate agents, property managers, mortgage lenders and inspectors 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
- 399,289+3.3% since 2020
- Households
- 144,114
- Median age
- 40.4
- Homes lived in by their owners
- 62%
- Vehicles per household
- 1.6
- Land area
- 225 sq. mi.
- People per square mile
- 1,719
- Median household income
- $100,645+24.2% vs. 2015–2019, before inflation
- Average household income
- $142,372
- Median home value
- $377,700
- Jobs located here
- 262,034
- Daytime population
- 469,892Residents 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 real estate businesses 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 cardReal estate across New Jersey
Every New Jersey market ranked →The highest-scoring counties in New Jersey for real estate businesses, numbered among those based in New Jersey, with Mercer County marked.
Top counties in New Jersey
| Market | Score | Listings | Per 10k households | Housing spending per listing (U.S. = 100) | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Warren County, NJ | 87 | 70 | 15.4 | 291 | +3.2% | #3 of 2,229 |
| 2Salem County, NJ | 80 | 47 | 18.9 | 219 | +2.3% | #30 of 2,229 |
| 3Sussex County, NJ | 67 | 177 | 30.6 | 159 | +2.9% | #318 of 2,229 |
| 4Middlesex County, NJ | 65 | 814 | 26.4 | 182 | +2.6% | #384 of 2,229 |
| 5Hudson County, NJ | 62 | 767 | 25.6 | 179 | +1.8% | #506 of 2,229 |
| 6Camden County, NJ | 62 | 558 | 27.6 | 158 | +2.4% | #512 of 2,229 |
| 7Cumberland County, NJ | 62 | 143 | 26.6 | 147 | +2.2% | #516 of 2,229 |
| 8Hunterdon County, NJ | 62 | 186 | 36.6 | 146 | +2.3% | #517 of 2,229 |
| 9Passaic County, NJ | 59 | 492 | 27.5 | 160 | +1.6% | #630 of 2,229 |
| 10Somerset County, NJ | 58 | 467 | 35.7 | 150 | +3.5% | #679 of 2,229 |
| 11Mercer County, NJ | 58 | 491 | 34.1 | 137 | +3.3% | #684 of 2,229 |
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 real estate businesses are in Mercer County, NJ?
As of September 2026, map listings count 491 real estate businesses in Mercer County. 40 of them (8%) are chain locations. The listings count real estate agents and brokers, property managers, mortgage brokers and lenders, and home inspectors. Official counts show 210 businesses with payroll classed as real estate agents, property managers, mortgage lenders and inspectors in 2023, up 12.9% from 2019. Official counts list 1,676 one-person businesses without payroll.
How much do households in Mercer County, NJ spend on rent and homeowner costs?
About $2.9B a year, or $20,218 per household. That is 21% above the U.S. average (an index of 121, where 100 is the U.S. average). For the 491 real estate businesses on map listings, housing spending per office is 37% above the U.S. figure. That figure is all rent and homeowner costs, used as a measure of housing demand; it is not money real estate businesses take in. It is estimated from the incomes of the 144,114 households in Mercer County and national spending patterns by income.
How does Mercer County, NJ compare with the U.S. for real estate businesses?
Mercer County has 34.1 real estate businesses per 10,000 households, 11% below the U.S. rate of 38.5. The index of housing spending per office is 137, where 100 is the U.S. At the U.S. ratio of real estate businesses to household spending, Mercer County would have about 673, against 491 on map listings. There is one business with payroll in the industry for every 686 households, against one for every 414 across the U.S. The official count rose 12.9% from 2019 to 2023, against +15.8% for the U.S.
How fast is Mercer County, NJ growing?
Population estimates put Mercer County at 399,289 people in 2025, up 3.3% since 2020, in step with the U.S. (+3.1%). It has 144,114 households. Median household income in Mercer County is $100,645, 25% above the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 24.2%, 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 58 for real estate businesses (upper middle), #684 of 2,229 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 real estate businesses 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 real estate businesses · 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.