HomeMy WebLinkAbout08.25.21 Redistricting Partners - Legacy Data_District Summary
From:Ring, Brian
To:Alpert, Bruce;Bennett, Robin;Clerk of the Board;Connelly, Bill;Cook, Holly;Cook, Robin;Hironimus, Patrizia;
Kimmelshue, Tod;Lucero, Debra;Paulsen, Shaina;Pickett, Andy;Reaster, Kayla;Ring, Brian;Ritter, Tami;
Sweeney, Kathleen;Teeter, Doug
Subject:Redistricting Partners - Legacy Data/District Summary
Date:Wednesday, August 25, 2021 4:55:12 PM
Attachments:Memo on Existing lines and 2020 Census Data with Maps.pdf
Good afternoon Board – attached is a memo from Redistricting Partners, containing information on
the recently released legacy data, district by district. This information will be covered during our
scheduled calls this Friday afternoon. Please let me know if you have any questions. Thanks!
Brian Ring
Assistant Chief Administrative Officer
Administration
25 County Center Drive, Oroville, CA 95965
T: 530.552.3311 | M: 530.570.7688 | F: 530.538.7120
County of Butte
Current Districts | 2020 Census (Legacy File)
ЋЉЊЉ 5źƭƷƩźĭƷ tƚƦǒƌğƷźƚƓƭ
The County of Butte last redistricted in 2011 with a supervisorial-based process. The
populations of each district at that time were based on the 2010 Decennial Census.
2010 Census Population
Population Deviation
1 45,337 1,337 3.0%
2 43,697 -303 -0.7%
3 43,204 -796 -1.8%
4 43,604 -396 -0.9%
5 44,157 157 0.4%
ƚƷğƌ 5ĻǝźğƷźƚƓ Ѝ͵Бі
As the following table shows, utilizing the American Community Survey (ACS) data from the
2006-2010 vintage which would be used in the 2011 redistricting, there was no district which
had a significantly large Citizen Voting Age Population (CVAP) ethnic/racial subset.
2010 Citizen Voting Age Population (2006-2010 ACS)
Total CVAP CVAP Asian CVAP Black CVAP Latino
1
32,399 800 2.5% 816 2.5% 2,386 7.4%
2
33,886 941 2.8% 512 1.5% 3,894 11.5%
3
31,356 919 2.9% 484 1.5% 2,322 7.4%
4
29,937 961 3.2% 316 1.1% 3,638 12.2%
5
35,728 424 1.2% 105 0.3% 1,756 4.9%
tƚƦǒƌğƷźƚƓ DƩƚǞƷŷ ğƓķ /ǒƩƩĻƓƷ 5ĻǝźğƷźƚƓƭ
decennial census, identifying
the whole count of persons and where they resided as of April 1, 2020. Redistricting Partners
1
has concluded the work of placing this data into the census blocks, block groups, and tracts.
This data represents the whole population data prior to a state required reallocation of prison
population that will be conducted by the Statewide Database at UC Berkeley. This adjusted
data will be completed in the coming weeks and updated counts will be provided at that time.
Based on this data, the county experienced a decrease in population by 8,368 residents, or -3.8%,
since the last decennial census. This is significantly lower than the state population change of
6.1%.
At the district level, districts 1-4 saw an increase of residents, with District 2 seeing the largest
increase of 6,491 residents. District 5, on the other hand, was the only district to lose population,
decreasing by almost 25,000 people.
Census Populations and Growth
(2010 Census to Current ACS)
2020 2010 Change
1
47,101 45,337 1,764 3.9%
2
50,188 43,697 6,491 14.9%
3
48,211 43,204 5,007 11.6%
4
46,854 43,604 3,250 7.5%
5
19,278 44,157 -24,879-56.3%
ƚƷğƌ 211,632 220,000 -8,368-3.8%
It is clear that a significant reason for this imbalance is the loss of much of the population
i. For context, the City of Paradise had 26,214
residents in the 2010 Census and 4,764 in the 2020 release. Potentially related, the population
of Chico was one of the fastest growing in the state, with the city growing from 88,874 in 2010
to 101,475 in 2020. This 14% increase in population could partially be a result of residents
relocating after the fires. It would be an open question if the rebuilding of Paradise draws
population out of Chico over the next decade.
While examining the population changes is likely important to the residents and supervisors,
the county will have to use the official census population totals for its redistricting, with little
ability to adjust for the expected recovery of population to
and other potential changes.
With the county population of 211,632, the ideal population for any district would be 42,326.
The seat with the largest population is District 2 at 50,188 (+18.6%) and the smallest is District 5
1
These counts are based on the 2020 Census geography. There may be slight differences as many census
blocks were consolidated.
at 19,278 (-54.5%), placing the county at a total of 73.1% deviation, well outside of the 10%
maximum required deviation range.
2020 Population and Deviations
(Census Legacy Files)
Population Deviation
1
47,101 4,775 11.3%
2
50,188 7,862 18.6%
3
48,211 5,885 13.9%
4
46,854 4,528 10.7%
5
19,278 -23,048 -54.5%
ƚƷğƌ 5ĻǝźğƷźƚƓ АЌ͵Њі
The data used to determine the size of Ethnic and Racial subgroups utilized for Voting Rights
Act calculations, have been finalized for the current redistricting cycle. As with the 2010 data,
this does not show significant ethnic population that will require districts to be drawn in any
specific construction to comply with the VRA.
Current Citizen Voting Age Population
(Current ACS)
Total CVAP CVAP Asian CVAP Black CVAP Latino
1
33,808 1,789 5.3% 935 2.8% 3,434 10.2%
2
36,700 1,606 4.4% 635 1.7% 5,482 14.9%
3
33,617 650 1.9% 466 1.4% 3,500 10.4%
4
32,728 1,958 6.0% 558 1.7% 5,529 16.9%
5
36,957 498 1.3% 100 0.3% 2,578 7.0%
Attached is a full packet with a map of each district and their population details based on the
most recent ACS data. This data will change slightly with the State prison population
rd
reallocation which we expect will be released sometime before September 23.
This memorandum will be updated as more data become available.