WASHINGTON – No census since the House of Representatives gave itself 435 members has changed apportionment of Congressional districts less than the 2020 census will.
No state will lose two districts and no state but Texas will gain two.
Illinois will lose one of its 18 districts, an improvement for a state that lost six districts from 1970 to 2010.
Like Illinois, three other losers have seen greater losses.
New York lost two districts or more at each census from 1950 to 2010.
Ohio and Pennsylvania each lost a district or two at each census from 1960 to 2010, totaling nine losses for Pennsylvania and eight for Ohio.
California will lose a district it gained in 2000 and kept in 2010.
West Virginia, which elected six Representatives in the 1950s, will elect two.
States where population jumped for decades didn’t jump so high this time.
Florida will gain one district after gaining two or more in each census since 1940.
The double gain for Texas leads the nation but doesn’t keep up with its growth record of 12 districts from 1970 to 2010.
Arizona gained a district at every census since 1950, except once when it gained two, but that string has snapped.
Georgia gained one in 1990, two in 2000, one in 2010, and none this time.
Nevada held a single seat in Congress in 1970, gained a second district in 1980, a third in 2000, and a fourth in 2010, but none this time.
The House expanded from 391 members to 435 in 1910.
New York had 43 districts, Pennsylvania 36, and Illinois 27.
The apportionment didn’t change after the 1920 census, and the 1930 census caught up by taking 27 districts from 21 states and giving them to 11 states.
California gained nine, from 11 to 20.
The 1940 census took nine districts from nine states and gave them to seven states.
California gained three.
The 1950 census took 14 districts from nine states and gave them to seven states.
Pennsylvania lost three and California gained seven.
The 1960 census took 21 districts from 16 states and gave them to ten states.
California gained seven, Florida gained four, and Pennsylvania lost three.
The 1970 census took 11 districts from nine states and gave them to five states.
California gained five and Florida gained three.
Pennsylvania and New York each lost two.
The 1980 census took 17 districts from ten states and gave them to 11 states.
New York lost five and Illinois, Pennsylvania, and Ohio each lost two.
Florida gained four, Texas three, and California two.
The 1990 census took 19 districts from 13 states and gave them to eight states.
California gained seven, Florida four, and Texas three.
New York lost three and Illinois, Pennsylvania, Ohio, and Michigan each lost two.
The 2000 census took 12 districts from ten states and gave them to eight states.
Georgia, Florida, Texas, and Arizona each gained two.
New York and Pennsylvania each lost two.
The 2010 census took 12 districts from ten states and gave them to eight states.
Texas gained four and Florida two.
New York and Ohio each lost two.
The 2020 census leaves Pennsylvania with 17 districts, half the number in 1930.
The Census Bureau hasn’t issued a full report for 2020, but it provided state populations for reapportionment purposes in April.
The bureau reported Illinois population at 12,812,508, down 18,124 from 2010.