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Welcome to Union County ...

Time Zone: Union County lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time.

The community of Elizabeth is the Seat for Union County.

Union County was founded in 1857 and was created by taking area from Essex County.

From the Census Estimates for 2019, <1> Union had a population of 556,664 people. This is an increase of 3.76% since the last Census (which gave a population of 536,499 people in 2010).

At the time of the 2010 Census, Union represented 6.1% of the total population of New Jersey.

Below are some of the communities located in Union County:

  • Elizabeth
    • Jump to our Gazetteer entry for Elizabeth
    • Population from the 2020 Census: 128,382 people
    • Jump to Google Maps centered on Elizabeth
  • Linden
    • Jump to our Gazetteer entry for Linden
    • Population from the 2020 Census: 42,076 people
    • Jump to Google Maps centered on Linden
  • Plainfield
    • Jump to our Gazetteer entry for Plainfield
    • Population from the 2020 Census: 50,011 people
    • Jump to Google Maps centered on Plainfield
  • Rahway
    • Jump to our Gazetteer entry for Rahway
    • Population from the 2020 Census: 29,832 people
    • Note: The GPS coordinates that we are using for Rahway have been provided by the GNIS.<2> The coordinates still need to be verified.
    • Jump to Google Maps centered on Rahway
  • Summit
    • Jump to our Gazetteer entry for Summit
    • Population from the 2020 Census: 21,812 people
    • Jump to Google Maps centered on Summit
  • Westfield
    • Jump to our Gazetteer entry for Westfield
    • Population from the 2020 Census: 29,238 people
    • Jump to Google Maps centered on Westfield

Websites of Interest ...

  • Of Special Interest ...
    • The GenDisasters website specializes in newspaper articles about tragedies and disasters. While it makes interesting reading all by itself, it should be of special interest to genealogists and family historians looking for people who were either affected by or directly involved in such tragedies.
    • At this time (Dec 2022), GenDisasters website is currently offline due to a hacker attack. Hopefully they will be back soon.

Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2010 Census and the next count will be for the 2020 Census.
<2>The location has been supplied by the Geographic Names Information System - which is maintained by the U.S. Geological Survey (USGS). While these values should be definitive, we found that accuracy can vary and you should double-check the location if accuracy is required.

 

 

 

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This page was last modified/updated: 08 Jun 2023