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The Santa Anna handbook

Living in Santa Anna, TX: what to set up and who to call

Santa Anna has no town government of its own, so Starr County runs its elections and most services, and its children attend San Isidro Independent School District. Power in Santa Anna comes from Magic Valley Electric Coop, a cooperative utility rather than a private company.

Which school will my kid attend?How do I register to vote?ZIP codes
Santa Anna has no town government. It’s a census-designated place in Starr County, so the county and regional agencies provide most services. This page answers what we can; the same answers appear on Santa Anna’s town page under “Getting set up”.

I’m new in town

What to set up in Santa Anna, and who provides it. Tap an answer for the details and where they come from.

PowerMagic Valley Electric Coopcooperative utility · 10.5¢/kWhMore →Internet3 providers100% of addresses get 100/20 MbpsMore →Trash & dumpNot on file yetWe don’t have Santa Anna’s trash rules yetMore →SchoolSan Isidro Independent School DistrictWhich school depends on grade and addressMore →Register to voteIn personRules from vote.govMore →ZIP code78591Where people live, not P.O. boxesMore →
Home services

Power, water and internet

Who to call to start service at a new address in Santa Anna.

Electricity

Power comes from Magic Valley Electric Coop

Magic Valley Electric Coop (Magic Valley Electric Coop Inc), a cooperative utility, serves all of Santa Anna. Its homes paid an average of 10.5¢ per kWh in 2025, about $140 a month (its average across Texas).

Start or move service: magicvalley.coop · (866) 225-5683

Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.

Internet

3 home internet providers serve Santa Anna

100% of 13 addresses can get 100/20 Mbps; 76% can get fiber.

ProviderTechnologyAddressesFastest (Mbps)
Valley Telephone CooperativeFixed wireless, Fiber100%1,000/1,000
VerizonFixed wireless38%300/20
T-MobileFixed wireless8%25/3

FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.

Trash & recycling

We don’t have Santa Anna’s trash rules yet

Pickup rules, the dump and recycling in Santa Anna.

Trash, recycling and bulk pickupNot on fileSanta Anna has no town government of its own, so look for trash and recycling rules on the county’s site.
Schools

Where your child goes to school

Public school districts and the school path by grade.

Santa Anna kids go to
PK–8San Isidro Elin San Isidro
9–12San Isidro H Sin San Isidro

Santa Anna is in San Isidro Independent School District.

Test scores and every school: see Schools →

U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.

Government & voting

No town hall: the county runs things

Santa Anna is unincorporated, so Starr County is the local government.

Local governmentStarr CountySanta Anna is a census-designated place: no town hall of its ownCensus
Who runs elections hereStarr County Early Voting ClerkElections here are run by Starr County (county election office). 100 N. FM 3167, Ste. 218, Rio Grande City, TX 78582 · (956) 716-4800FVAP, May 2022
Register to voteIn personTexas has no online registration; you can register in person until 30 days before Election Day or by mail (postmarked 30 days before).vote.govCheck your registration and polling placeteamrv-mvp.sos.texas.govThe state’s voter lookup

Election office: FVAP local election office directory, updated May 2022; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.

ZIP codes & area codes

Santa Anna is in ZIP code 78591

ZIP codes where Santa Anna residents live, with the share of the town in each.

ZIPPost office nameShare of Santa AnnaZIP’s residents in Santa Anna
78591Santa Elena, TX100%4%

Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.

Everyday places

Getting around, the ER and the library

One line each; the subject pages have the rest.

Nearest emergency roomStarr County Memorial Hospital27.5 miles awayGet a library cardRio Grande City Public Library591 E 3rd St. · (956) 487-4389

ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.

Questions about living in Santa Anna

Who provides electricity in Santa Anna?

Magic Valley Electric Coop (Magic Valley Electric Coop Inc), a cooperative utility. Its homes paid about 10.5¢ per kWh in 2025 (EIA).

What internet providers serve Santa Anna?

Valley Telephone Cooperative, Verizon, T-Mobile (FCC, as of December 2025).

What ZIP codes are in Santa Anna?

78591. Census 2020 ZIP Code Tabulation Areas.

What school district is Santa Anna in?

San Isidro Independent School District.

How do I register to vote in Santa Anna?

Texas has no online registration; you can register in person until 30 days before Election Day or by mail (postmarked 30 days before). Elections here are run by the Starr County Early Voting Clerk. Check your registration at teamrv-mvp.sos.texas.gov.

Sources & dates

Every answer above names its source. Here they are with their dates.

  • Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
  • Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
  • ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
  • Schools: NCES Common Core of Data, 2024–25.
  • Registration: vote.gov, updated Nov 18, 2024 (read Oct 10, 2026). Official sites and area codes: Wikidata.
  • Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
  • Internet: FCC National Broadband Map, as of December 2025.