Mercer County, New Jersey Cities (2025)

13 cities

City
Rank
2025 Pop.
2020 Pop.
Change
Density
Area (mi²)
Type
Hamilton township192,05092,0570.22%2,33339.45 Township
Trenton289,79090,5920.1%11,8057.61 City
Ewing township334,93737,2390.26%2,29715.21 Township
Lawrence township431,79133,0470.03%1,46321.73 Township
West Windsor township531,44929,5291.52%1,23125.55 Township
Princeton630,25530,610-0.06%1,68617.95 Township
East Windsor township729,74829,937-0.02%1,91115.57 Township
Hopewell township817,36517,442-0.05%29958.07 Township
Robbinsville township915,43115,4350.23%75520.44 Township
Hightstown borough105,8555,8830.02%4,7491.23 Borough
Hopewell township114,3634,3770.11%14629.89 Township
Pennington borough122,8902,7960.87%3,0070.96 Borough
Hopewell borough131,8941,8990%2,6160.72 Borough