Pets · County · New Jersey
Pet stores in Mercer County, NJ
Competitor counts, household spending and official business counts for pet stores in Mercer County, NJ, set against other counties and the U.S.
Groundwork market score · out of 100
Score 54 out of 100: Upper middle
Ranked #414 of 974 scored counties
#8 of 20 scored counties in New Jersey
- Listings
- 29
- 11 chain locations (38%)
- Official establishments
- 9
- Businesses with payroll, 2023
- Household spending a year
- $110.1M
- On pets · $764 a household
- Spending per listing
- $3.8M
- 16% below the U.S.
- Listings per 10k households
- 2.0
- In line with the U.S.
- Population, 2025
- 399,289
- +3.3% since 2020
See the pet stores around any address in Mercer County
The site report maps the pet stores 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 29 pet stores in Mercer County. 11 of them (38%) are chain locations, against 38% across the U.S. That is 2.0 per 10,000 households, in line with the U.S. rate of 2.0.
At $764 per household (16% below the U.S. average), households in Mercer County spend about $110.1M a year on pets. Spread across 29 pet stores, that is $3.8M per store, 16% below the U.S. figure of $4.5M. That spending covers all pets, which pet stores share with other businesses in the trade.
In 2023, official counts showed 9 businesses with payroll in Mercer County classed as pet and pet supplies stores. That is one for every 16,013 households, against one for every 13,024 across the U.S. Since fiscal 2022, 1 SBA-backed loan worth $800K has gone to businesses classed as pet and pet supplies stores in Mercer County.
Population estimates put the population change in Mercer County from 2020 to 2025 at +3.3%, in step with the U.S. (+3.1%). The Groundwork market score for pet stores in Mercer County is 54 (upper middle), #414 of 974 scored counties and #8 of 20 scored counties in New Jersey.
How Mercer County compares
The same measures for New Jersey and the whole U.S. Spending per listing divides a year of household spending on all pets by the pet stores 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 | New Jersey | U.S. |
|---|---|---|---|
| Listings per 10k households | 2.0 | 2.0 | 2.0 |
| Spending per listing | $3.8M | $3.9M | $4.5M |
| Households per official establishment | 16,013 | 13,810 | 13,024 |
| Official establishment growth, 2019–2023 | n/a | −21.8% | −1.6% |
| Population growth, 2020–2025 | +3.3% | +3.0% | +3.1% |
| Spending per household on pets | $764 | $774 | $909 |
| Median household income | $100,645 | $103,556 | $80,734 |
| Groundwork market score | 54 | 36 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 14 → 9
- Employees, 2023
- 142
- Annual payroll, 2023
- $4.5M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 2911 chain locations
- Listings at the U.S. rate for this spending
- 24The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 1
- Amount
- $800K
SBA-backed loans to businesses classed as pet and pet supplies stores 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 pet stores 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 cardPet stores across New Jersey
Every New Jersey market ranked →The highest-scoring counties in New Jersey for pet stores, numbered among those based in New Jersey, with Mercer County marked.
Top counties in New Jersey
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Middlesex County, NJ | 73 | 38 | 1.2 | $6.5M | +2.6% | #126 of 974 |
| 2Essex County, NJ | 70 | 39 | 1.2 | $5.7M | +4.2% | #165 of 974 |
| 3Hudson County, NJ | 66 | 40 | 1.3 | $5.5M | +1.8% | #225 of 974 |
| 4Union County, NJ | 63 | 35 | 1.7 | $4.6M | +5.0% | #272 of 974 |
| 5Cumberland County, NJ | 56 | 5 | 0.9 | $6.3M | +2.2% | #373 of 974 |
| 6Passaic County, NJ | 56 | 28 | 1.6 | $4.5M | +1.6% | #383 of 974 |
| 7Ocean County, NJ | 56 | 44 | 1.8 | $3.9M | +5.6% | #390 of 974 |
| 8Mercer County, NJ | 54 | 29 | 2.0 | $3.8M | +3.3% | #414 of 974 |
| 9Somerset County, NJ | 47 | 36 | 2.8 | $3.3M | +3.5% | #541 of 974 |
| 10Bergen County, NJ | 46 | 91 | 2.6 | $3.4M | +2.4% | #556 of 974 |
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
Pets
- Pet businesses64
- Veterinarians71
- Pet grooming and boarding56
- Pet stores54
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many pet stores are in Mercer County, NJ?
There are 29 pet stores on map listings in Mercer County as of September 2026. 11 of them (38%) are chain locations. The listings count pet stores. Official counts show 9 businesses with payroll classed as pet and pet supplies stores in 2023.
How much do households in Mercer County, NJ spend on pets?
About $110.1M a year, or $764 per household. That is 16% below the U.S. average (an index of 84, where 100 is the U.S. average). Spread across the 29 pet stores on map listings, it comes to $3.8M per store. The spending figure covers all pets, not only pet stores. 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 pet stores?
Mercer County has 2.0 pet stores per 10,000 households, in line with the U.S. rate of 2.0. Spending per store is $3.8M, 16% below the U.S. figure of $4.5M. At the national ratio of pet stores to household spending, Mercer County would have about 24, against 29 on map listings. There is one business with payroll in the industry for every 16,013 households, against one for every 13,024 across 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 54 for pet stores (upper middle), #414 of 974 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 pet stores 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 pet stores · 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.