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.