Boundary Atlas

Modesto, California

Modesto is a city in Stanislaus County, California, with 218,492 residents in 2020. It spans 2 congressional districts: CA-05 (66%) and CA-13 (34%). Its state senate district is State Senate District 4; its state house district is Assembly District 22.

218,492residents (2020 Census)
43.4 sq miland area
7ZIP codes
2congressional districts

County

CountyShare of residents
Stanislaus County100%

Congressional districts

Congressional districtShare of residents
California's 5th congressional district (CA-05)66%
California's 13th congressional district (CA-13)34%

Elected officials

OfficeMemberContactShare of residents
MayorSue Zwahlen209-571-5597citywide
U.S. Representative (CA-05)Tom McClintock (R)202-225-251166%
U.S. Representative (CA-13)Adam Gray (D)202-225-194734%
U.S. SenatorAdam B. Schiff (D)202-224-3841statewide
U.S. SenatorAlex Padilla (D)202-224-3553 · contact formstatewide
State Senator (State Senate District 4)Marie Alvarado-Gil (R)916-933-8680100%
Assembly Member (Assembly District 22)Juan Alanis (R)209-521-2201100%

Elected in 2024 under CA's previous congressional map; this district's lines changed for the 120th Congress (seated January 3, 2027).

Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of residents
State Senate District 4100%

State house districtShare of residents
Assembly District 22100%

ZIP codes

Percentages mark ZIPs only partly in Modesto: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Modesto's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:place:0648354")

Modesto here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.