Censuses

Below are federal and state censuses by year. Union county was formed in 1857 out of Essex county, New Jersey.

Year Type Description Series Film #
1790 federal Essex and most of state not extant
1800 federal Essex and most of state not extant
1810 federal Essex and most of state not extant
1820 federal Essex and most of state not extant
1830 federal Bergen and Essex County M19 79
1840 federal Essex County M704 250, 251
1850 federal Essex County (Free Schedule) M432 449, 450
1850 federal Slave Schedules for Entire State M432 466
1855 state Union County not extant
1860 federal Union County M653 710
1865 state Union County 1 reel
1870 federal Union County M593 890, 891
1875 state Union County not extant
1880 federal Warren (cont.) & Union Counties EDs 1-175, sheet 30 T9 800
1880 federal Union County (cont.) ED175, sheet 31 to end T9 801
1885 state Union County 1 reel
1890 federal Union County and rest of state not extant
1890 federal Union Veterans & Widows of Civil War (Hudson, Hunterdon, Mercer, Middlesex, Somerset, and Union counties) M123 42
1895 state Union County 2 reels
1900 federal Sussex (cont.) & Union Counties T623 995
1900 federal Union County (cont.) T623 996
1900 federal Union (end) & Warren Counties T623 997
1905 state Union County 2 reels
1910 federal Sussex & Union Counties EDs 50-70 T624 909
1910 federal Union County EDs 71-100, 155 T624 910
1910 federal Union EDs 101-120 & Warren Counties T624 911
1915 state Union County 4 reels
1920 federal Union County EDs 57-60, 109, 110, 61-74, 92-95, 104-107 T625 1069
1920 federal Union County EDs 75-91, 96-103 T625 1070
1920 federal Union County EDs 108, 111-117, 136-144, 152, 153, 118-135 T625 1071
1920 federal Union EDs 145-151, 154-167 & Warren Counties T625 1072

1930

federal

Union County

T626

1385-1390

1940 federal Union County EDs 20-1 to 20-36 T627 2385
1940 federal Union County EDs 20-37 to 20-63 T627 2386
1940 federal Union County EDs 20-64 to 20-99 T627 2387
1940 federal Union County EDs 20-100 to 20-130 T627 2388
1940 federal Union County EDs 20-131 to 20-166 T627 2389
1940 federal Union County (Elizabeth) EDs 20-167 to 20-211 T627 2390
1940 federal Union County (Elizabeth) EDs 23-1 to 23-35 T627 2397
1940 federal Union County (Elizabeth) EDs 23-36 to 23-61 T627 2398
1940 federal Union County (Elizabeth) EDs 23-62 to 23-87 T627 2399
1940 federal Union County (Elizabeth) EDs 23-88 to 23-119 T627 2400

Census indexes and images are available for free at FamilySearch. Links are available above. Browse by location to search a specific collection.

April 2, 2012: The 1940 census images become available online. Learn more about the records.

The 1940 census images are hosted on multiple sites:

Print out a legal-sized blank 1940 census page. (I do this so I can read what each column is for.)

Find out when the Census Day was held for each decade.

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