Below, you will find a chart containing the approximate birth years for age listings on the census. Please remember, that before 1850 the census information on age was vague.

1790 Census BORN 1830 Census BORN
16 and Under Before 1774 Under 5 Between 1825-1830
Under 16 Between 1774-1790 5-10 Between 1820-1825
1800 Census 10-15 Between 1815-1820
Under 10 Between 1790-1800 15-20 Between 1810-1815
10-16 Between 1784-1790 20-30 Between 1800-1810
16-26 Between 1774-1784 30-40 Between 1790-1800
26-45 Between 1755-1774 40-50 Between 1780-1790
45 and Over Before 1755 50-60 Between 1770-1780
1810 Census 60-70 Between 1760-1750
Under 10 Between 1800-1810 70-80 Between 1750-1740
10-16 Between 1794-1800 80-90 Between 1740-1750
16-26 Between 1784-1794 90-100 Between 1730-1740
26-45 Between 1765-1784 100 and Over Before 1730
45 and Over Before 1765 1840 Census
1820 Census Under 5 Between 1835-1840
Under 10 Between 1810-1820 5-10 Between 1830-1835
10-16 Between 1804-1810 10-15 Between 1825-1830
16-18 (males only) Between 1802-1804 15-20 Between 1820-1825
16-26 Between 1794-1804 20-30 Between 1810-1820
26-45 Between 1775-1794 30-40 Between 1800-1810
45 and Over Before 1775 40-50 Between 1790-1800
50-60 Between 1780-1790
60-70 Between 1770-1780
70-80 Between 1760-1770
80-90 Between 1750-1760
90-100 Between 1740-1750
100 and Over Before 1740
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