Migration to and from Mercer County, New Jersey
Where Mercer County residents came from and where they went over the 5-year window 2016-2020. Census ACS County-to-County Migration Flows, 2020 5-yr (frozen vintage).
Total inflow
26,101
people moved in (5-yr)
Total outflow
22,975
people moved out (5-yr)
Net migration
+3,126
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Middlesex County | New Jersey | 3,411 |
| Burlington County | New Jersey | 1,674 |
| Hudson County | New Jersey | 1,407 |
| Somerset County | New Jersey | 1,269 |
| Asia | 995 | |
| Bergen County | New Jersey | 844 |
| Monmouth County | New Jersey | 824 |
| Union County | New Jersey | 803 |
| Essex County | New Jersey | 757 |
| Bucks County | Pennsylvania | 627 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| Middlesex County | New Jersey | 2,360 |
| Burlington County | New Jersey | 2,253 |
| Bucks County | Pennsylvania | 2,064 |
| Monmouth County | New Jersey | 877 |
| Camden County | New Jersey | 668 |
| Philadelphia County | Pennsylvania | 550 |
| Hunterdon County | New Jersey | 542 |
| New York County | New York | 520 |
| Essex County | New Jersey | 518 |
| Montgomery County | Pennsylvania | 484 |
Explore Mercer County
- Business data for Mercer CountyConstruction sector establishments, employment, payroll
- Cities in New JerseyACS demographic profiles for places statewide
- ZIP code lookupSearch demographic data by ZIP code
- Opportunity IndexRank counties by business growth potential
- Federal contracts in NJGovBids: RFPs, awards, NAICS matching
- New business filings in New JerseyNewFilings: fresh SOS registrations
Methodology
- Counts represent the number of people aged 1+ who reported a different residence at the survey reference date than they did one year earlier, aggregated across the 5-year sample window 2016-2020.
- Outbound (OUT) flows are reported less frequently than inbound (IN) because the survey captures the destination side of each move. Many county pairs have null OUT counts, which is normal.
- "Total inflow" sums the published MOVEDIN counts across all origin counties, including foreign-region inflows (Africa, Asia, Central America, etc.). It is not the same as net population change.
- Frozen vintage. The Census Bureau has not released a newer county-to-county migration flows file. The 2020 5-yr vintage (covering 2016-2020) is the latest available as of build date.
Source: U.S. Census Bureau, American Community Survey, County-to-County Migration Flows: 2016-2020. Vintage: 2020 5-yr. Generated: 2026-05-28. FIPS: 34021.