Mercer County, NJ Average Home Price (2026)
The average home price in Mercer County, New Jersey is about $461,000 (the 2026 median across 20 ZIP codes, at ~$287/sq ft) — 20% more affordable than the New Jersey median and 60% more expensive than the typical U.S. home.
How Mercer County compares
Mercer County is relatively expensive for housing nationally: its typical home costs $461,000 against $573,000 for New Jersey and $289,000 for the U.S. Within the county, ZIP-level values run from about $194,000 to $1,010,000.
| Area | Typical value | $ / sq ft |
|---|---|---|
| Mercer County | $461,000 | $287 |
| New Jersey | $573,000 | $327 |
| United States | $289,000 | $193 |
Cities in Mercer County
Cities with their own home-value page, largest first:
Mercer County home prices by ZIP code
The 15 most valuable ZIP codes in Mercer County (of 20 with data):
| ZIP code | Typical value | $ / sq ft | vs county |
|---|---|---|---|
| 08550 West Windsor Township | $1,010,000 | $380 | +119% |
| 08540 Princeton | $963,000 | $392 | +109% |
| 08542 Princeton | $898,000 | $866 | +95% |
| 08534 Pennington | $670,000 | $319 | +45% |
| 08525 Hopewell | $659,000 | $388 | +43% |
| 08560 Titusville | $658,000 | $322 | +43% |
| 08691 Trenton | $633,000 | $326 | +37% |
| 08690 Trenton | $485,000 | $289 | +5% |
| 08648 Lawrence Township | $466,000 | $284 | +1% |
| 08520 Hightstown | $462,000 | $292 | +0% |
| 08620 Trenton | $460,000 | $305 | +0% |
| 08619 Trenton | $429,000 | $284 | -7% |
| 08628 Ewing | $423,000 | $239 | -8% |
| 08610 Trenton | $349,000 | $277 | -24% |
| 08638 Ewing | $306,000 | $252 | -34% |
Home value appreciation in Mercer County
Home prices in Mercer County have risen about 87% over the last 10 years (≈6.5% a year) and +59.8% over 20 years, according to the FHFA house price index through 2025. The most recent year came in at +5.7% — still rising. A home worth $461,000 today was worth roughly $246,129 ten years ago.
See where that trend takes a specific home with the home appreciation calculator — statewide, New Jersey is +87.7% over the same 10 years. Past appreciation is a track record, not a forecast; local prices can fall.
Calculators for Mercer County
Run the numbers for Mercer County with the local rates already filled in — change any input to test your own situation.
Salary needed to buy a home in Mercer County
To buy the typical $461,000 home in Mercer County with 20% down, you need a household income of roughly $125,000 a year (about $2,930 a month for the mortgage, taxes, and insurance). With 10% down the bar rises to about $149,000, because the loan is bigger and mortgage insurance kicks in.
| Down payment | Cash down | Monthly payment | Income needed |
|---|---|---|---|
| 5% (+PMI) | $23,100 | $3,640/mo | $156,000/yr |
| 10% (+PMI) | $46,100 | $3,480/mo | $149,000/yr |
| 20% | $92,200 | $2,930/mo | $125,000/yr |
Assumes a 30-year fixed mortgage at 6.5%, property tax at 1.1% and insurance at 0.45% of value per year, PMI of 0.75% on loans with less than 20% down, and the standard 28% housing-to-income rule. Your rate, taxes, and HOA will move these — run your own numbers in the mortgage calculator.
What your budget buys in Mercer County
At about $287 per square foot, here is roughly how much home different budgets get you in Mercer County:
| Budget | Approx. size | What that looks like locally |
|---|---|---|
| $250k | 870 sq ft | below the local median — condos, smaller or older homes |
| $300k | 1050 sq ft | below the local median — condos, smaller or older homes |
| $400k | 1390 sq ft | around the typical home here |
| $500k | 1740 sq ft | around the typical home here |
| $600k | 2090 sq ft | above the median — larger homes or the pricier ZIPs |
Wondering where that budget goes further? The relocation calculator ranks hundreds of U.S. cities by what the same money buys — it opens filtered to New Jersey.
Estimate a specific home in Mercer County
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Mercer County home prices: frequently asked
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Browse all New Jersey cities and counties, or look up price per square foot by ZIP code nationwide.
Directional estimates from public market data (Realtor.com & Zillow research; FHFA house price index; Census ZIP-to-county relationships), not appraisals.