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By Density

This tool uses US Census data to illustrate the distribution of the US population over ranges of population density. The data set contains all 208,125 block groups in the 2000 Census. In 2000, block groups had a median area of 0.48 square miles (1.25 km2) and a median population of 1,133.

Densest block group

block group 1, census tract 279 in New York County, New York
326,814 people per square mile
510.65 people per acre
3,240 people
0.0097 square miles (6.2 acres)

Median block group

(half the population is in denser block groups)
block group 2, census tract 321, Mercer County, Pennsylvania
2,521.6 people per square mile
3,22 people per acre
1,373 people
0.54 square miles (349 acres)

Least dense block group

block group 1, census tract 3 in North Slope Borough, Alaska
0.002 people per square mile
0.000003 people per acre
3 people
3,246 square miles (2,077,370 acres)

classing method (required)
equal interval
quantile

units (required)
per square mile
per acre

number of intervals (required)

density range (optional)
equal interval only
—

confine to a state (optional)
equal interval only.

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