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San Joaquin and Contra Costa Counties

9th Congressional District (2026)

760,064 Population
412,406 Voters
These maps go into effect starting with the 2026 election cycle, following the passage of Proposition 50. View 2022 9th Congressional District.
San Joaquin and Contra Costa Counties

9th Congressional District (2026)

760,064 Population
412,406 Voters
These maps go into effect starting with the 2026 election cycle, following the passage of Proposition 50. View 2022 9th Congressional District.

Unlock full voter and turnout data for 9th Congressional District Voter counts, turnout history, and demographics—ready for your next briefing in minutes, not hours.

Population Overlap

9th Congressional District (2026)
Total Population 760,064
165 overlapping jurisdictions
11 jurisdiction types
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Counties

2 jurisdictions
28.2% of this CD
18.4% of the county
14.8% of this CD
50.8% of the subdistrict
County of Contra Costa - District 5 Shanelle Scales-Preston
13.4% of this CD
45.9% of the subdistrict
11th Assembly District Lori D. Wilson (D)
2.9% of this CD
4.3% of the subdistrict
15th Assembly District Anamarie Ávila Farías (D)
25.3% of this CD
37.5% of the subdistrict
9th State Senate District Tim Grayson (D)
25.3% of this CD
19.4% of the subdistrict
3rd State Senate District Christopher Cabaldon (D)
3.0% of this CD
2.2% of the subdistrict
9.8% of this CD
9.8% of the subdistrict
18.4% of this CD
18.4% of the subdistrict
71.5% of this CD
71.5% of the subdistrict
28.2% of this CD
2.2% of the subdistrict
City of Antioch Ron Bernal
15.2% of this CD
100.0% of the subdistrict
2.5% of this CD
44.1% of the subdistrict
10.1% of this CD
100.0% of the subdistrict
15.4% of this CD
97.0% of the subdistrict
0.3% of this CD
3.1% of the subdistrict
2.9% of this CD
17.2% of the subdistrict
1.8% of this CD
5.2% of the subdistrict
2.6% of this CD
48.9% of the subdistrict
8.2% of this CD
97.3% of the subdistrict
28.2% of this CD
18.4% of the subdistrict
28.2% of this CD
18.4% of the subdistrict
0.3% of this CD
100.0% of the subdistrict
71.8% of this CD
70.2% of the county
8.3% of this CD
39.3% of the subdistrict
21.1% of this CD
100.0% of the subdistrict
15.6% of this CD
78.0% of the subdistrict
8.1% of this CD
41.9% of the subdistrict
18.7% of this CD
90.2% of the subdistrict
13th Assembly District Rhodesia Ransom (D)
52.9% of this CD
82.1% of the subdistrict
9th Assembly District Heath Flora (R)
18.9% of this CD
30.5% of the subdistrict
5th State Senate District Jerry McNerney (D)
71.8% of this CD
53.4% of the subdistrict
71.5% of this CD
71.5% of the subdistrict
71.8% of this CD
5.6% of the subdistrict
2.0% of this CD
22.8% of the subdistrict
City of Manteca Gary Singh
11.0% of this CD
100.0% of the subdistrict
2.1% of this CD
100.0% of the subdistrict
City of Stockton Christina Fugazi
33.4% of this CD
78.8% of the subdistrict
12.3% of this CD
100.0% of the subdistrict
0.1% of this CD
5.6% of the subdistrict
6.6% of this CD
100.0% of the subdistrict
1.0% of this CD
59.9% of the subdistrict
14.6% of this CD
61.7% of the subdistrict
14.6% of this CD
79.6% of the subdistrict
2.5% of this CD
90.7% of the subdistrict
15.9% of this CD
55.3% of the subdistrict
13.0% of this CD
97.1% of the subdistrict
3.4% of this CD
98.8% of the subdistrict
0.2% of this CD
15.9% of the subdistrict
2.5% of this CD
2.8% of the subdistrict
69.3% of this CD
63.1% of the subdistrict
71.8% of this CD
70.4% of the subdistrict
3.2% of this CD
100.0% of the subdistrict
0.1% of this CD
7.1% of the subdistrict
1.4% of this CD
100.0% of the subdistrict
3.2% of this CD
100.0% of the subdistrict
0.2% of this CD
48.9% of the subdistrict
0.6% of this CD
100.0% of the subdistrict
0.1% of this CD
15.0% of the subdistrict
0.5% of this CD
100.0% of the subdistrict
0.0% of this CD
100.0% of the subdistrict
0.1% of this CD
100.0% of the subdistrict

Cities

9 jurisdictions
City of Antioch Ron Bernal
15.2% of this CD
100.0% of the city
City of Antioch - District 1 Tamisha Torres-Walker
3.8% of this CD
100.0% of the subdistrict
3.8% of this CD
100.0% of the subdistrict
4.0% of this CD
100.0% of the subdistrict
3.7% of this CD
100.0% of the subdistrict
2.0% of this CD
22.8% of the city
City of Lodi - District 3 Cameron Bregman
0.0% of this CD
2.1% of the subdistrict
0.5% of this CD
30.4% of the subdistrict
1.4% of this CD
79.7% of the subdistrict
City of Manteca Gary Singh
11.0% of this CD
100.0% of the city
2.9% of this CD
100.0% of the subdistrict
2.8% of this CD
100.0% of the subdistrict
City of Manteca - District 3 David Breitenbucher
2.8% of this CD
100.0% of the subdistrict
2.7% of this CD
100.0% of the subdistrict
3.2% of this CD
100.0% of the city
2.5% of this CD
44.1% of the city
0.6% of this CD
51.9% of the subdistrict
0.6% of this CD
50.7% of the subdistrict
1.1% of this CD
99.0% of the subdistrict
0.2% of this CD
19.6% of the subdistrict
10.1% of this CD
100.0% of the city
2.1% of this CD
100.0% of the city
City of Stockton Christina Fugazi
33.4% of this CD
78.8% of the city
7.3% of this CD
100.0% of the subdistrict
6.8% of this CD
100.0% of the subdistrict
7.2% of this CD
100.0% of the subdistrict
7.4% of this CD
100.0% of the subdistrict
City of Stockton - District 5 Brando Villapudua
2.0% of this CD
29.0% of the subdistrict
2.8% of this CD
40.6% of the subdistrict
12.3% of this CD
100.0% of the city

State Assembly

4 jurisdictions
11th Assembly District Lori D. Wilson (D)
2.9% of this CD
4.3% of the AD
13th Assembly District Rhodesia Ransom (D)
52.9% of this CD
82.1% of the AD
15th Assembly District Anamarie Ávila Farías (D)
25.3% of this CD
37.5% of the AD
9th Assembly District Heath Flora (R)
18.9% of this CD
30.5% of the AD

State Senate

3 jurisdictions
3rd State Senate District Christopher Cabaldon (D)
3.0% of this CD
2.2% of the SD
5th State Senate District Jerry McNerney (D)
71.8% of this CD
53.4% of the SD
9th State Senate District Tim Grayson (D)
25.3% of this CD
19.4% of the SD

Congressional (2022)

3 jurisdictions
9.8% of this CD
9.8% of the CD
18.4% of this CD
18.4% of the CD
71.5% of this CD
71.5% of the CD

Board of Equalization

2 jurisdictions
71.8% of this CD
5.6% of the district
28.2% of this CD
2.2% of the district

School Districts

16 jurisdictions
15.4% of this CD
97.0% of the district
Antioch Unified - District 1 Antonio Hernandez
3.3% of this CD
100.0% of the trustee area
2.8% of this CD
85.6% of the trustee area
3.1% of this CD
100.0% of the trustee area
Antioch Unified - District 4 Olga Cobos-Smith
3.0% of this CD
100.0% of the trustee area
Antioch Unified - District 5 Mary Helen Rocha
3.2% of this CD
100.0% of the trustee area
0.2% of this CD
15.9% of the district
0.2% of this CD
84.2% of the trustee area
0.3% of this CD
3.1% of the district
0.1% of this CD
5.6% of the district
0.1% of this CD
28.1% of the trustee area
3.4% of this CD
98.8% of the district
0.7% of this CD
94.0% of the trustee area
0.7% of this CD
100.0% of the trustee area
0.7% of this CD
100.0% of the trustee area
0.7% of this CD
100.0% of the trustee area
0.7% of this CD
100.0% of the trustee area
2.9% of this CD
17.2% of the district
Liberty Union High - District 1 Yolanda Peña-Mendrek
1.4% of this CD
41.1% of the trustee area
0.3% of this CD
7.4% of the trustee area
1.2% of this CD
36.8% of the trustee area
6.6% of this CD
100.0% of the district
1.3% of this CD
100.0% of the trustee area
1.3% of this CD
100.0% of the trustee area
1.4% of this CD
100.0% of the trustee area
1.3% of this CD
100.0% of the trustee area
1.4% of this CD
100.0% of the trustee area
1.0% of this CD
59.9% of the district
0.2% of this CD
70.4% of the trustee area
Linden Unified - District 2 Marla Livengood
0.3% of this CD
84.6% of the trustee area
Linden Unified - District 3 Marlene Von Berg
0.3% of this CD
99.9% of the trustee area
0.2% of this CD
46.8% of the trustee area
14.6% of this CD
61.7% of the district
Lodi Unified - District 1 Susan Macfarlane
2.1% of this CD
62.0% of the trustee area
Lodi Unified - District 2 Victoria Lenderman
3.5% of this CD
100.0% of the trustee area
Lodi Unified - District 3 Sherry Alexander
1.8% of this CD
53.8% of the trustee area
Lodi Unified - District 4 Courtney Porter
0.8% of this CD
24.2% of the trustee area
2.9% of this CD
86.6% of the trustee area
3.5% of this CD
100.0% of the trustee area
14.6% of this CD
79.6% of the district
2.6% of this CD
100.0% of the trustee area
1.3% of this CD
46.3% of the trustee area
2.6% of this CD
100.0% of the trustee area
2.5% of this CD
94.6% of the trustee area
Manteca Unified - District 5 Cathy Pope-Gotschall
2.5% of this CD
100.0% of the trustee area
2.6% of this CD
100.0% of the trustee area
0.6% of this CD
22.3% of the trustee area
1.8% of this CD
5.2% of the district
1.8% of this CD
25.8% of the trustee area
2.6% of this CD
48.9% of the district
0.2% of this CD
22.7% of the trustee area
0.8% of this CD
71.9% of the trustee area
0.5% of this CD
48.2% of the trustee area
1.1% of this CD
100.0% of the trustee area
8.2% of this CD
97.3% of the district
2.5% of this CD
90.7% of the district
0.5% of this CD
100.0% of the trustee area
0.6% of this CD
100.0% of the trustee area
0.5% of this CD
95.7% of the trustee area
0.5% of this CD
98.6% of the trustee area
0.3% of this CD
58.2% of the trustee area
15.9% of this CD
55.3% of the district
0.7% of this CD
17.1% of the trustee area
0.5% of this CD
13.0% of the trustee area
4.0% of this CD
100.0% of the trustee area
3.1% of this CD
78.1% of the trustee area
3.5% of this CD
79.2% of the trustee area
4.1% of this CD
100.0% of the trustee area
13.0% of this CD
97.1% of the district
1.9% of this CD
100.0% of the trustee area
2.0% of this CD
100.0% of the trustee area
1.9% of this CD
100.0% of the trustee area
2.0% of this CD
100.0% of the trustee area
1.9% of this CD
100.0% of the trustee area
1.5% of this CD
81.9% of the trustee area
1.8% of this CD
97.6% of the trustee area

Community College

3 jurisdictions
28.2% of this CD
18.4% of the CCD
3.8% of this CD
12.5% of the trustee area
23.5% of this CD
75.9% of the trustee area
0.9% of this CD
2.9% of the trustee area
69.3% of this CD
63.1% of the CCD
5.2% of this CD
33.1% of the trustee area
15.0% of this CD
96.2% of the trustee area
16.1% of this CD
100.0% of the trustee area
3.4% of this CD
21.7% of the trustee area
2.9% of this CD
19.5% of the trustee area
15.7% of this CD
98.9% of the trustee area
11.1% of this CD
70.3% of the trustee area
2.5% of this CD
2.8% of the CCD
2.8% of this CD
22.2% of the trustee area

Supervisor Districts

7 jurisdictions
14.8% of this CD
50.8% of the district
County of Contra Costa - District 5 Shanelle Scales-Preston
13.4% of this CD
45.9% of the district
8.3% of this CD
39.3% of the district
21.1% of this CD
100.0% of the district
15.6% of this CD
78.0% of the district
8.1% of this CD
41.9% of the district
18.7% of this CD
90.2% of the district

County Board of Ed

2 jurisdictions
28.2% of this CD
18.4% of the district
10.0% of this CD
33.5% of the trustee area
18.3% of this CD
55.9% of the trustee area
71.8% of this CD
70.4% of the district
18.5% of this CD
90.8% of the trustee area
16.0% of this CD
78.1% of the trustee area
9.5% of this CD
48.4% of the trustee area
17.1% of this CD
80.7% of the trustee area
10.8% of this CD
52.6% of the trustee area

Unincorporated Communities

10 jurisdictions
0.1% of this CD
7.1% of the community
0.3% of this CD
100.0% of the community
1.4% of this CD
100.0% of the community
0.2% of this CD
48.9% of the community
0.6% of this CD
100.0% of the community
0.1% of this CD
15.0% of the community
0.5% of this CD
100.0% of the community
3.2% of this CD
100.0% of the community
0.0% of this CD
100.0% of the community
0.1% of this CD
100.0% of the community
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