Mercer County, NJ ZIP Codes
23 ZIP codes cover all or part of Mercer County, New Jersey. The Census Bureau counts 385,864 residents in the county, with a median household income of $100,645 and a median home value of $377,700. Median household income ranges from $50,390 in 08618 to $224,213 in 08550. Its largest communities include Trenton, Princeton, Mercerville, Hamilton Square and White Horse.
Mercer County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 385,864 |
| Households | 144,114 |
| Median household income | $100,645 |
| Median home value | $377,700 |
| Median age | 39.5 |
| Median rent | $1,623 |
All 23 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 403,790 |
| Households (sum of ZIP codes) | 151,213 |
| Median household income, range across ZIP codes | $50,390 (08618) to $224,213 (08550) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $114,539 |
| Homeowners | 63.8% |
| Households with kids under 18 | 30.4% |
| Moved in the past year | 12.0% |
| Carrier routes in EDDM2GO's route library | 290 routes, 156,791 homes (21 of 23 ZIP codes) |
Top facts
- Highest median household income in Mercer County: 08550 ($224,213)
- Most residents: 08540 (50,388 people)
- Highest homeownership: 08560 (94.3% own their home)
- Most households with kids: 08550 (37.7% of households)
- Most new movers: 08544 (42.7% moved in last year)
- Youngest median age: 08544 (20.4 years)
- Highest median home value: 08550 ($807,200)
Every ZIP code in Mercer County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 08540 | Princeton | 50,388 | 18,609 | $176,983 | $767,900 | 63.7% | 36.4% | 14.8% | 48 | 22,607 | 63% of its land |
| 08618 | Trenton | 35,634 | 13,477 | $50,390 | $227,000 | 45.8% | 25.5% | 13.4% | 25 | 15,148 | 100% of its land |
| 08610 | Trenton | 33,465 | 12,315 | $83,906 | $264,600 | 66.0% | 35.0% | 10.9% | 20 | 12,707 | 94% of its land |
| 08611 | Trenton | 31,995 | 10,716 | $56,788 | $160,500 | 39.0% | 35.1% | 12.9% | 10 | 9,729 | 100% of its land |
| 08648 | Lawrence Township | 31,323 | 12,030 | $125,514 | $428,000 | 66.0% | 26.8% | 17.4% | 25 | 13,655 | 100% of its land |
| 08520 | Hightstown | 29,504 | 10,974 | $118,010 | $376,600 | 69.9% | 33.2% | 8.9% | 20 | 11,627 | 100% of its land |
| 08619 | Trenton | 24,089 | 9,924 | $105,946 | $352,500 | 70.0% | 26.1% | 7.3% | 19 | 11,026 | 100% of its land |
| 08638 | Trenton | 22,816 | 9,045 | $66,875 | $245,100 | 58.0% | 26.2% | 15.3% | 16 | 10,519 | 100% of its land |
| 08550 | Princeton Junction | 21,067 | 7,817 | $224,213 | $807,200 | 76.1% | 37.7% | 9.1% | 15 | 7,913 | 100% of its land |
| 08690 | Trenton | 18,841 | 7,731 | $127,339 | $383,900 | 82.1% | 23.5% | 6.0% | 15 | 8,570 | 100% of its land |
| 08691 | Robbinsville | 16,607 | 6,859 | $132,520 | $552,000 | 74.8% | 36.0% | 8.1% | 13 | 7,463 | 89% of its land |
| 08609 | Trenton | 15,938 | 4,880 | $68,238 | $103,700 | 29.8% | 37.7% | 9.7% | 7 | 5,482 | 100% of its land |
| 08534 | Pennington | 13,272 | 4,995 | $175,573 | $573,000 | 88.2% | 35.4% | 6.4% | 11 | 5,957 | 100% of its land |
| 08629 | Trenton | 13,013 | 4,296 | $82,646 | $182,400 | 62.5% | 30.9% | 9.4% | 6 | 4,228 | 100% of its land |
| 08620 | Trenton | 11,621 | 4,187 | $105,368 | $373,800 | 80.6% | 27.8% | 5.7% | 9 | 4,796 | 87% of its land |
| 08628 | Trenton | 9,831 | 4,468 | $108,158 | $369,500 | 59.5% | 17.3% | 15.6% | 8 | 5,660 | 100% of its land |
| 08530 | Lambertville | 8,119 | 3,596 | $120,467 | $574,800 | 80.8% | 15.2% | 19.0% | 8 | 3,871 | 19% of its land |
| 08525 | Hopewell | 4,522 | 1,903 | $165,324 | $572,500 | 88.1% | 30.1% | 9.9% | 5 | 2,074 | 70% of its land |
| 08544 | Princeton | 4,392 | 12 | — | — | 0.0% | 0.0% | 42.7% | — | — | 100% of its land |
| 08560 | Titusville | 3,245 | 1,333 | $128,516 | $420,300 | 94.3% | 24.8% | 3.8% | 3 | 1,809 | 99% of its land |
| 08542 | Princeton | 2,533 | 1,264 | $105,524 | $754,100 | 32.3% | 16.0% | 31.6% | 5 | 2,033 | 100% of its land |
| 08608 | Trenton | 1,250 | 653 | $61,201 | $132,400 | 15.3% | 18.4% | 11.7% | 2 | 1,185 | 100% of its land |
| 08561 | Windsor | 325 | 129 | — | $484,400 | 36.4% | 21.7% | 3.1% | — | — | 100% of its land |
A ZIP code is listed for Mercer County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Trenton — 90,338 residents · 11 ZIP codes
- Princeton — 30,756 residents · 3 ZIP codes
- Mercerville — 13,535 residents · 2 ZIP codes
- Hamilton Square — 11,622 residents · 2 ZIP codes
- White Horse — 10,507 residents · 2 ZIP codes
- Kendall Park — 10,011 residents · 2 ZIP codes
- Monmouth Junction — 9,141 residents · 1 ZIP code
- Twin Rivers — 8,382 residents · 1 ZIP code
- Heathcote — 7,717 residents · 3 ZIP codes
- Yardville — 6,301 residents · 2 ZIP codes
- Hightstown — 5,920 residents · 1 ZIP code
- Lawrenceville — 3,924 residents · 1 ZIP code
- Robbinsville Center — 3,777 residents · 1 ZIP code
- The College of New Jersey — 3,658 residents · 2 ZIP codes
- Groveville — 3,100 residents · 1 ZIP code
- Pennington — 2,827 residents · 1 ZIP code
- Ten Mile Run — 2,492 residents · 1 ZIP code
- Princeton Junction — 2,025 residents · 2 ZIP codes
- Hopewell — 1,823 residents · 1 ZIP code
- Kingston — 1,670 residents · 2 ZIP codes
- Griggstown — 812 residents · 1 ZIP code
- Washington Crossing — 536 residents · 1 ZIP code
- Titusville — 501 residents · 1 ZIP code
- Windsor — 325 residents · 1 ZIP code
- East Rocky Hill — 235 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Mercer County — 21 ZIP codes ranked
- ZIP codes with the highest home values in Mercer County — 21 ZIP codes ranked
- ZIP codes with the highest homeownership in Mercer County — 22 ZIP codes ranked
- ZIP codes with the most families with kids in Mercer County — 22 ZIP codes ranked
- ZIP codes with the most new movers in Mercer County — 22 ZIP codes ranked
- Youngest ZIP codes in Mercer County — 22 ZIP codes ranked
- Oldest ZIP codes in Mercer County — 22 ZIP codes ranked
- Fastest-growing ZIP codes in Mercer County — 20 ZIP codes ranked
Price a mailing to Mercer County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Mercer County, NJ?
- 08540, 08618, 08610, 08611, 08648, 08520, 08619, 08638, 08550, 08690, 08691, 08609, 08534, 08629, 08620, 08628, 08530, 08525, 08544, 08560, 08542, 08608 and 08561. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Mercer County?
- 385,864 residents in 144,114 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Mercer County?
- $100,645 for the county as a whole. Its ZIP codes range from $50,390 (08618) to $224,213 (08550).
- Which Mercer County ZIP code has the highest median household income?
- 08550, at $224,213, among ZIP codes with at least 1,000 residents. See the full ranking of Mercer County ZIP codes by income.
- How many carrier routes and mailboxes are in Mercer County?
- For the 21 of 23 ZIP codes in EDDM2GO's stored route library: 290 carrier routes reaching 156,791 residential and 10,977 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.