Legislative Districts 2010 Census Statistics

posted May 23, 2011, 6:57 PM by Michael McDonald   [ updated Jun 1, 2011, 11:06 AM ]

Note: this post corrects for a Nevada data error pointed out by a helpful reader.


We've posted selected 2010 census statistics for all the current (pre-redistricted) congressional and state legislative districts in the country. You can obtain the reports for any individual state by following the state links at http://www.publicmapping.org/resources/state-resources and then following the "Current Districts" link.

Highlights

The average district is overpopulated by 0.06% from the ideal population for its legislative chamber. The average African-American majority VAP district is under-populated by 12.21% and the average Latino majority VAP district is under-populated by 3.2%. The African-American statistics conform with the population estimates leading into the 2010 census, but under-population of the Latino districts comes as a bit of a surprise given that the community is the fastest growing in the country. What this tells us is that the Latino community growth is not in the existing communities. Demographers that I have spoken with attribute the decline in the African-American communities to two factors: children leaving home and gentrification. In all, these statistics may indicate that at least in terms of representation, constituencies are becoming a more racially heterogeneous.  

Biggest Losers

The most under-populated districts are in the Katrina ravaged parts of Louisiana and Mississippi. The top five from most under-populated to least are:

State District Total Population Ideal Population Deviation Percent Deviation % Black Voting-Age Population % Hispanic Voting-Age Population
LA State House District 99 16,419 43,175 -26,756 -62.0% 79.40% 2.90%
LA State House District 104 21,315 43,175 -21,860 -50.6% 18.30% 8.30%
LA State House District 103 23,643 43,175 -19,532 -45.2% 22.10% 9.80%
MS State House District 115 13,505 24,322 -10,817 -44.5% 24.30% 11.60%
LA State Senate District 2 65,868 116,240 -50,372 -43.3% 84.30% 3.40%

Biggest Gainers

State District Total Population Ideal Population Deviation Percent Deviation % Black Voting-Age Population % Hispanic Voting-Age Population
VA State House District 13 190,620 80,010 110,610 138.2% 10.80% 11.00%
UT State House District 56 90,503 36,852 53,651 145.6% 0.50% 6.50%
NV Clark County Senatorial District 9 354,064 128,598 225,466 175.3% 8.40% 13.50%
NV Assembly District 22 222,912 64,299 158,613 246.7% 6.60% 12.80%
NV Assembly District 13 256,407 64,299 192,108 298.8% 10.60% 13.40%

Smallest and Biggest Overall

The smallest population district is New Hapshire State House District 3, Coos with a total population of 3,233.

The largest population district is California State Senate District 37 with a total population of 1,215,876.

A spreadsheet of these statistics is available here. If you use these data, please site them as Michael McDonald. 2011. "Legislative Districts' 2010 Census Statistics." Public Mapping Project. http://www.publicmapping.org.
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