States · New Jersey · Mercer County

Lawrenceville, New Jersey.

A community in Mercer County, with no city government of its own. Zillow publishes no home prices for it: see Mercer County’s.

Living in Lawrenceville, Mercer County, New Jersey

Lawrenceville, in Mercer County, had 3,751 people in the 2020 census. 80% of its homes are lived in by their owners and 20% are rented. Unemployment in Mercer County was 4.9% in August 2026, and the county had 1.1% fewer jobs in 2025 than the year before. The most residents work in schools and health care, then professional services.

People 3,751 in the 2020 census; median age 43.2
Household income Too few homes in Lawrenceville for the Census survey to measure.
Unemployment 4.9% Mercer County, August 2026; 6.0% a year before
Homes 80% lived in by their owners; 20% rented
  • 1,784households
  • 71%of adults have a degree
  • 0%below the poverty line
  • 28 mintypical commute
  • 32%work from home

What residents work in

  • Schools, hospitals and social care36%
  • Professional and business services26%
  • Shops (retail)8%
  • Manufacturing8%
  • Banks, insurance and property8%
  • Other services6%

Employed residents by industry, from the Census survey. Mercer County had 261,312 jobs in 2025, 1.1% fewer than the year before (Bureau of Labor Statistics).

Weather through the year

Average daily high and low for each month: coldest in January, 40° and 23°; warmest in July, 86° and 65° 20° 40° 60° 80° J 40° 23° F M A M J J 86° 65° A S O N D
Average daily high and low for each month: coldest in January, 40° and 23°; warmest in July, 86° and 65° 20° 40° 60° 80° J 40° 23° F M A M J J 86° 65° A S O N D

Coldest in January, with highs near 40° and lows near 23°; warmest in July, with highs near 86° and lows near 65°. About 47 inches of rain and melted snow a year.

Average daily high and low, 1991–2020, at the Trenton State College weather station, 4 miles away (NOAA).

Largest workplaces in Lawrenceville

  1. Sand Dollar ExpressCourier services76
  2. Lawrenceville Elementary School k61111066
  3. Geological SurveyFederal government · Department of the Interior58

Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 2 workplaces with 20 or more staff, 142 people in all. Federal offices come from OPM's federal workforce data (2026). Not listed: many offices and banks, which need not report to OSHA; military bases, whose staff OPM withholds; and, in about half the states, city and county governments.

Natural hazards

  1. Strong windVery high
  2. Winter weatherRelatively high
  3. Inland floodingRelatively high
  4. Ice stormsRelatively moderate
  5. HurricanesRelatively moderate
  6. Heat wavesRelatively moderate

FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms in Lawrenceville’s census tracts, against the rest of the country; all of them together, relatively moderate. It is meant for planning, not a substitute for a local risk assessment or a flood map: FEMA’s index.

From the U.S. Census Bureau’s 2020 census and its American Community Survey (2020–2024 five-year estimates), and the Bureau of Labor Statistics. A survey, so each figure has a margin of error, and figures it is not sure of are left out. More on Mercer County.