California / CA-16
California District 16
Score
Irregularity score 77 IrregularLess compact than 82% of other congressional districts.
76th least compact of 429 nationally, 21st of 52 in California.
A score describes shape, not intent. Coastlines, rivers and the Voting Rights Act can all make a district irregular. How scores work
The three measures
- Polsby-Popper
- 0.15at least as compact as 21% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
- Reock
- 0.42at least as compact as 31% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
- Convex hull
- 0.64at least as compact as 16% of districts on this measure
Area compared with a rubber band stretched around the district, counting only land. Low for bites and tentacles.
Each measure runs from 0 to 1, where 1 is a perfect circle or a shape with no dents.
The state's edge
25% of this district's border is the state's edge: a coastline, a national border or a state line. Mapmakers don't choose those lines. A ragged one, like a coastline or a river, lowers Polsby-Popper. Reock and convex hull count only the state's own land, so water and neighboring states don't count against them. More on the state's edge
Who lives here
Most of this district's voting-age residents (54.7%) belong to minority groups. The largest are Asian (31.9%) and Hispanic or Latino (18.1%). The Voting Rights Act can require districts that keep a minority community together so it can elect candidates it prefers, and those districts can be irregular on purpose. A district like this isn't necessarily drawn for that reason, and the site doesn't know whether this one was. Figures are from the 2020 Census. How these are counted
New lines for 2026
California used a different map in the 2026 election than in 2024: the 2025 Proposition 50 map (legislature-drawn; voter-approved). Source: California Secretary of State
Cities and towns
The largest places with people in this district, from the 2020 Census. A place split between districts shows how many of its residents live in this one.
- San Jose city296,688 of its 1,013,240 residents
- Mountain View cityall 82,376 residents
- Palo Alto cityall 68,572 residents
- Campbell cityall 43,959 residents
- Pacifica cityall 38,640 residents
- Los Gatos townall 33,529 residents
- Los Altos city31,621 of its 31,625 residents
- Saratoga cityall 31,051 residents
- Menlo Park city23,176 of its 33,780 residents
- Stanford communityall 21,150 residents
And 20 smaller places. 2% of this district's people live outside any city, town or named community. How places are counted
ZIP codes
46 ZIP codes have residents in this district. 24 of them are split with other districts. A percentage is the share of that ZIP code's 2020 residents who live here.
Show all 46 ZIP codes
- 94010 (1%)
- 94018
- 94019
- 94020
- 94021
- 94022
- 94024 (98%)
- 94025 (67%)
- 94027 (97%)
- 94028
- 94037
- 94038
- 94040
- 94041
- 94043
- 94044
- 94060
- 94061 (9%)
- 94062 (27%)
- 94074
- 94301
- 94303 (38%)
- 94304
- 94305
- 94306
- 95008
- 95014 (1%)
- 95030
- 95032 (99%)
- 95033 (38%)
- 95070
- 95110 (1%)
- 95111 (58%)
- 95112 (7%)
- 95117 (20%)
- 95118 (99%)
- 95120 (6%)
- 95121 (61%)
- 95122 (76%)
- 95124
- 95125 (69%)
- 95126 (19%)
- 95128 (62%)
- 95129 (23%)
- 95130 (89%)
- 95136 (28%)
These are the Census Bureau's ZIP code areas, which match residential ZIP codes closely. ZIP codes used only for PO boxes or a single organization aren't included. How ZIP codes are matched
2024 presidential vote
California drew new lines for 2026, and no 2024 results have been published for them. Where the votes come from
U.S. House
Sam Liccardo, Democrat
Elected November 3, 2026, takes office January 3, 2027.
Unofficial results from the California Secretary of State, checked November 6, 2026. A race shows a winner once news decision desks have called it. Results become official when the state certifies them. Where this comes from
California's senators
- Alex Padilla, Democrat
- Adam B. Schiff, Democrat
Senators are elected by the whole state, so district lines don't change who they are. Senators serving as of November 6, 2026. Senators elected in November 2026 take office January 3, 2027. Where this comes from
Where it sits in California
- Very compact (0 to 19)
- Compact (20 to 39)
- Middle (40 to 59)
- Irregular (60 to 79)
- Very irregular (80 to 100)
The area outlined with dashes on the map, enlarged so its smaller districts can be seen.
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