US Census Maps

Explore the 2020 Decennial Census and the latest American Community Survey on a map.

Census year

The 2020 Decennial Census is a full count taken every 10 years; the American Community Survey (ACS) publishes new 5-year estimates each year.

Ask the census

Ask in plain English, get neighborhoods ranked on the map.

Area

For example, your home town, a county name, or a ZIP code

Topic

The 10 highest and lowest Block groups for
Year structure built: 1939 or earlier.

Minimum responses: 200231,521 block groups

Highest

Lowest

< Back to Year structure built

American Community Survey estimates come from a rolling 5-year sample of about 3.5 million addresses per year. They are subject to sampling variability; values for very small areas can be unreliable. Read more

Year structure built: 1939 or earlier

20.3%

37.4%

58.3%

79.6%