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31st Congressional District (2026)

760,070 Population
452,591 Voters
These maps go into effect starting with the 2026 election cycle, following the passage of Proposition 50. View 2022 31st Congressional District.

31st Congressional District (2026)

760,070 Population
452,591 Voters
These maps go into effect starting with the 2026 election cycle, following the passage of Proposition 50. View 2022 31st Congressional District.

Unlock full voter and turnout data for 31st Congressional District Voter counts, turnout history, and demographics—ready for your next briefing in minutes, not hours.

Population Overlap

31st Congressional District (2026)
Total Population 760,070
181 overlapping jurisdictions
11 jurisdiction types
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Counties

2 jurisdictions
84.0% of this CD
6.4% of the county
26.2% of this CD
10.5% of the subdistrict
57.8% of this CD
22.2% of the subdistrict
41st Assembly District John Harabedian (D)
14.1% of this CD
22.0% of the subdistrict
48th Assembly District Blanca E. Rubio (D)
51.4% of this CD
80.9% of the subdistrict
53rd Assembly District Michelle Rodriguez (D)
25.2% of this CD
40.3% of the subdistrict
56th Assembly District Lisa Calderon (D)
8.8% of this CD
13.5% of the subdistrict
22nd State Senate District Susan Rubio (D)
69.6% of this CD
52.4% of the subdistrict
25th State Senate District Sasha Renée Pérez (D)
12.7% of this CD
9.3% of the subdistrict
30th State Senate District Bob Archuleta (D)
17.7% of this CD
13.6% of the subdistrict
31st Congressional District (2022) Gilbert Cisneros (D)
68.6% of this CD
68.6% of the subdistrict
25.5% of this CD
25.5% of the subdistrict
4.1% of this CD
4.1% of the subdistrict
84.0% of this CD
6.4% of the subdistrict
6.6% of this CD
100.0% of the subdistrict
0.1% of this CD
100.0% of the subdistrict
6.8% of this CD
100.0% of the subdistrict
2.9% of this CD
100.0% of the subdistrict
6.9% of this CD
100.0% of the subdistrict
0.0% of this CD
7.3% of the subdistrict
0.2% of this CD
90.3% of the subdistrict
5.0% of this CD
100.0% of the subdistrict
4.1% of this CD
100.0% of the subdistrict
5.0% of this CD
99.8% of the subdistrict
City of Pomona Tim Sandoval
9.5% of this CD
47.3% of the subdistrict
City of San Dimas Emmett Badar
4.6% of this CD
100.0% of the subdistrict
3.7% of this CD
100.0% of the subdistrict
14.4% of this CD
100.0% of the subdistrict
9.2% of this CD
99.9% of the subdistrict
2.4% of this CD
68.1% of the subdistrict
8.3% of this CD
99.5% of the subdistrict
5.0% of this CD
100.0% of the subdistrict
10.7% of this CD
100.0% of the subdistrict
3.7% of this CD
100.0% of the subdistrict
5.2% of this CD
100.0% of the subdistrict
5.8% of this CD
99.2% of the subdistrict
9.8% of this CD
43.8% of the subdistrict
8.0% of this CD
99.9% of the subdistrict
7.8% of this CD
51.4% of the subdistrict
5.1% of this CD
36.3% of the subdistrict
2.8% of this CD
37.5% of the subdistrict
23.9% of this CD
80.4% of the subdistrict
59.9% of this CD
57.7% of the subdistrict
84.0% of this CD
6.4% of the subdistrict
1.3% of this CD
100.0% of the subdistrict
1.4% of this CD
100.0% of the subdistrict
0.7% of this CD
100.0% of the subdistrict
0.9% of this CD
100.0% of the subdistrict
3.0% of this CD
100.0% of the subdistrict
2.1% of this CD
100.0% of the subdistrict
3.0% of this CD
99.6% of the subdistrict
16.0% of this CD
5.6% of the county
16.0% of this CD
27.6% of the subdistrict
41st Assembly District John Harabedian (D)
14.1% of this CD
22.0% of the subdistrict
53rd Assembly District Michelle Rodriguez (D)
25.2% of this CD
40.3% of the subdistrict
22nd State Senate District Susan Rubio (D)
69.6% of this CD
52.4% of the subdistrict
25th State Senate District Sasha Renée Pérez (D)
12.7% of this CD
9.3% of the subdistrict
25.5% of this CD
25.5% of the subdistrict
16.0% of this CD
1.3% of the subdistrict
City of Chino Eunice Ulloa
9.6% of this CD
84.2% of the subdistrict
4.8% of this CD
95.1% of the subdistrict
5.7% of this CD
10.2% of the subdistrict
10.3% of this CD
42.3% of the subdistrict
5.7% of this CD
25.8% of the subdistrict
16.0% of this CD
13.9% of the subdistrict
16.0% of this CD
5.6% of the subdistrict

Cities

16 jurisdictions
6.6% of this CD
100.0% of the city
1.3% of this CD
100.0% of the subdistrict
1.3% of this CD
100.0% of the subdistrict
1.3% of this CD
100.0% of the subdistrict
1.3% of this CD
100.0% of the subdistrict
City of Azusa - District 5 Robert Gonzales
1.3% of this CD
100.0% of the subdistrict
0.1% of this CD
100.0% of the city
City of Bradbury - District 1 Richard T. Hale Jr.
0.0% of this CD
99.9% of the subdistrict
City of Bradbury - District 2 Melodie Szymkowski
0.0% of this CD
99.9% of the subdistrict
City of Bradbury - District 3 Richard G. Barakat
0.0% of this CD
100.0% of the subdistrict
0.0% of this CD
99.7% of the subdistrict
0.0% of this CD
99.8% of the subdistrict
City of Chino Eunice Ulloa
9.6% of this CD
84.2% of the city
2.9% of this CD
100.0% of the subdistrict
City of Chino - District 1 Christopher Flores
2.9% of this CD
100.0% of the subdistrict
1.1% of this CD
39.4% of the subdistrict
2.7% of this CD
97.0% of the subdistrict
6.8% of this CD
100.0% of the city
1.3% of this CD
100.0% of the subdistrict
City of Covina - District 2 Walter Allen III
1.4% of this CD
100.0% of the subdistrict
1.4% of this CD
100.0% of the subdistrict
City of Covina - District 4 Patricia Cortez
1.3% of this CD
100.0% of the subdistrict
1.4% of this CD
100.0% of the subdistrict
2.9% of this CD
100.0% of the city
City of Duarte - District 1 Margaret Finlay
0.4% of this CD
100.0% of the subdistrict
City of Duarte - District 2 Martin Calderon
0.4% of this CD
100.0% of the subdistrict
0.4% of this CD
100.0% of the subdistrict
City of Duarte - District 4 Tera Martin Del Campo
0.4% of this CD
100.0% of the subdistrict
0.4% of this CD
100.0% of the subdistrict
City of Duarte - District 6 Cesar A. Garcia
0.4% of this CD
100.0% of the subdistrict
0.4% of this CD
100.0% of the subdistrict
6.9% of this CD
100.0% of the city
1.4% of this CD
100.0% of the subdistrict
1.4% of this CD
100.0% of the subdistrict
1.4% of this CD
100.0% of the subdistrict
1.3% of this CD
100.0% of the subdistrict
1.3% of this CD
100.0% of the subdistrict
0.0% of this CD
7.3% of the city
0.2% of this CD
90.3% of the city
5.0% of this CD
100.0% of the city
4.1% of this CD
100.0% of the city
0.8% of this CD
100.0% of the subdistrict
0.8% of this CD
100.0% of the subdistrict
City of La Verne - District 3 Meshal Kashifalghita
0.8% of this CD
99.8% of the subdistrict
0.8% of this CD
100.0% of the subdistrict
0.9% of this CD
100.0% of the subdistrict
5.0% of this CD
99.8% of the city
4.8% of this CD
95.1% of the city
City of Pomona Tim Sandoval
9.5% of this CD
47.3% of the city
0.2% of this CD
6.4% of the subdistrict
City of Pomona - District 2 Victor Preciado
2.8% of this CD
83.8% of the subdistrict
3.1% of this CD
94.7% of the subdistrict
3.3% of this CD
100.0% of the subdistrict
City of San Dimas Emmett Badar
4.6% of this CD
100.0% of the city
1.2% of this CD
100.0% of the subdistrict
1.1% of this CD
100.0% of the subdistrict
1.2% of this CD
100.0% of the subdistrict
1.2% of this CD
100.0% of the subdistrict
3.7% of this CD
100.0% of the city
14.4% of this CD
100.0% of the city
2.9% of this CD
100.0% of the subdistrict
2.9% of this CD
100.0% of the subdistrict
2.8% of this CD
100.0% of the subdistrict
3.0% of this CD
100.0% of the subdistrict
2.9% of this CD
100.0% of the subdistrict

State Assembly

4 jurisdictions
41st Assembly District John Harabedian (D)
14.1% of this CD
22.0% of the AD
48th Assembly District Blanca E. Rubio (D)
51.4% of this CD
80.9% of the AD
53rd Assembly District Michelle Rodriguez (D)
25.2% of this CD
40.3% of the AD
56th Assembly District Lisa Calderon (D)
8.8% of this CD
13.5% of the AD

State Senate

3 jurisdictions
22nd State Senate District Susan Rubio (D)
69.6% of this CD
52.4% of the SD
25th State Senate District Sasha Renée Pérez (D)
12.7% of this CD
9.3% of the SD
30th State Senate District Bob Archuleta (D)
17.7% of this CD
13.6% of the SD

Congressional (2022)

3 jurisdictions
31st Congressional District (2022) Gilbert Cisneros (D)
68.6% of this CD
68.6% of the CD
25.5% of this CD
25.5% of the CD
4.1% of this CD
4.1% of the CD

Board of Equalization

2 jurisdictions
84.0% of this CD
6.4% of the district
16.0% of this CD
1.3% of the district

School Districts

16 jurisdictions
9.2% of this CD
99.9% of the district
1.9% of this CD
100.0% of the trustee area
Azusa Unified - District 2 Yolanda Rodriguez-Peña
1.8% of this CD
100.0% of the trustee area
Azusa Unified - District 3 Sandra Benavides
1.8% of this CD
100.0% of the trustee area
1.8% of this CD
100.0% of the trustee area
Azusa Unified - District 5 Gabriela Arellanes
1.9% of this CD
99.4% of the trustee area
2.4% of this CD
68.1% of the district
8.3% of this CD
99.5% of the district
Bonita Unified - District 1 Chris Ann Horsley
1.6% of this CD
99.8% of the trustee area
1.7% of this CD
100.0% of the trustee area
1.7% of this CD
100.0% of the trustee area
1.7% of this CD
100.0% of the trustee area
Bonita Unified - District 5 Brittany Allison
1.7% of this CD
97.7% of the trustee area
5.7% of this CD
10.2% of the district
5.7% of this CD
50.9% of the trustee area
5.0% of this CD
100.0% of the district
1.0% of this CD
100.0% of the trustee area
1.0% of this CD
100.0% of the trustee area
1.0% of this CD
100.0% of the trustee area
1.0% of this CD
100.0% of the trustee area
1.0% of this CD
100.0% of the trustee area
10.3% of this CD
42.3% of the district
4.9% of this CD
100.0% of the trustee area
3.0% of this CD
62.1% of the trustee area
1.9% of this CD
39.4% of the trustee area
0.4% of this CD
9.1% of the trustee area
10.7% of this CD
100.0% of the district
2.2% of this CD
99.7% of the trustee area
2.1% of this CD
100.0% of the trustee area
2.1% of this CD
100.0% of the trustee area
2.1% of this CD
100.0% of the trustee area
2.2% of this CD
100.0% of the trustee area
3.7% of this CD
100.0% of the district
0.7% of this CD
100.0% of the trustee area
0.7% of this CD
100.0% of the trustee area
0.8% of this CD
100.0% of the trustee area
0.8% of this CD
100.0% of the trustee area
0.7% of this CD
100.0% of the trustee area
5.2% of this CD
100.0% of the district
1.1% of this CD
100.0% of the trustee area
1.0% of this CD
100.0% of the trustee area
1.0% of this CD
100.0% of the trustee area
1.0% of this CD
100.0% of the trustee area
1.0% of this CD
100.0% of the trustee area
7.8% of this CD
51.4% of the district
3.1% of this CD
100.0% of the trustee area
3.0% of this CD
100.0% of the trustee area
1.7% of this CD
57.3% of the trustee area
5.8% of this CD
99.2% of the district
Monrovia Unified - District 1 Daniel Gomez Tagle
1.1% of this CD
95.6% of the trustee area
1.1% of this CD
99.3% of the trustee area
1.2% of this CD
100.0% of the trustee area
1.2% of this CD
100.0% of the trustee area
1.2% of this CD
100.0% of the trustee area
5.7% of this CD
25.8% of the district
4.3% of this CD
95.2% of the trustee area
0.6% of this CD
14.1% of the trustee area
0.8% of this CD
17.2% of the trustee area
9.8% of this CD
43.8% of the district
Pomona Unified - District 2 Tamara Gonzalez
1.6% of this CD
35.2% of the trustee area
2.2% of this CD
46.5% of the trustee area
4.4% of this CD
100.0% of the trustee area
1.6% of this CD
38.3% of the trustee area
5.1% of this CD
36.3% of the district
2.7% of this CD
95.8% of the trustee area
1.3% of this CD
48.8% of the trustee area
0.7% of this CD
22.2% of the trustee area
0.4% of this CD
14.7% of the trustee area
2.8% of this CD
37.5% of the district
8.0% of this CD
99.9% of the district

Community College

3 jurisdictions
16.0% of this CD
13.9% of the CCD
6.2% of this CD
28.2% of the trustee area
9.8% of this CD
39.0% of the trustee area
23.9% of this CD
80.4% of the CCD
5.9% of this CD
100.0% of the trustee area
5.8% of this CD
99.2% of the trustee area
6.0% of this CD
99.8% of the trustee area
6.2% of this CD
99.9% of the trustee area
59.9% of this CD
57.7% of the CCD
8.9% of this CD
58.5% of the trustee area
15.5% of this CD
100.0% of the trustee area
5.2% of this CD
35.5% of the trustee area
12.4% of this CD
82.8% of the trustee area
6.6% of this CD
45.2% of the trustee area
1.9% of this CD
13.2% of the trustee area
9.4% of this CD
64.2% of the trustee area

Supervisor Districts

3 jurisdictions
57.8% of this CD
22.2% of the district
26.2% of this CD
10.5% of the district
16.0% of this CD
27.6% of the district

County Board of Ed

2 jurisdictions
84.0% of this CD
6.4% of the district
16.0% of this CD
5.6% of the district
5.7% of this CD
10.1% of the trustee area
10.3% of this CD
17.8% of the trustee area

Unincorporated Communities

7 jurisdictions
1.3% of this CD
100.0% of the community
1.4% of this CD
100.0% of the community
0.7% of this CD
100.0% of the community
0.9% of this CD
100.0% of the community
3.0% of this CD
100.0% of the community
2.1% of this CD
100.0% of the community
3.0% of this CD
99.6% of the community
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