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The Rio handbook

Living in Rio, FL: what to set up and who to call

Rio has no town government of its own, so Martin County runs its elections and most services, and its children attend Martin County School District. Xfinity and AT&T both wire most of Rio; 0% of addresses can get fiber.

Rio has no town government. It’s a census-designated place in Martin County, so the county and regional agencies provide most services. This page answers what we can; the same answers appear on Rio’s town page under “Getting set up”.

I’m new in town

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

Home services

Power, water and internet

Who to call to start service at a new address in Rio.

Electricity

Power comes from FPL

FPL (Florida Power & Light Co.), an investor-owned utility, serves all of Rio. Its homes paid an average of 14.6¢ per kWh in 2025, about $162 a month (its average across Florida).

Start or move service: www.fpl.com · (800) 375-2434

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

Drinking water · reported to EPA

Water comes from Martin Co Utilities

Martin Co Utilities supplies almost all of Rio. It draws ground water and serves 104,105 people in all.

No health-based violations reported to EPA in the five years to October 2026, like 86% of the 332 systems serving 100,001–250,000 people.

Lead, 90th percentile4.0 ppb
015 ppb action level20

The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2023, was 4.0 ppb, below the 15 ppb action level that applied. That’s higher than 86% of similar systems’ latest results.

The system’s full record: EPA ECHO report

EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. FL4431891.

Internet

4 home internet providers serve Rio

100% of 401 addresses can get 100/20 Mbps; 0% can get fiber.

ProviderTechnologyAddressesFastest (Mbps)
XfinityCable100%2,000/250
AT&TFixed wireless, DSL89%50/10
T-MobileFixed wireless89%100/20
VerizonFixed wireless72%300/20

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

Trash & recycling

We don’t have Rio’s trash rules yet

Pickup rules, the dump and recycling in Rio.

Trash, recycling and bulk pickupNot on fileRio 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.

Rio kids go to
PK–512 elementary schoolsDepends on your address
6–85 middle schoolsDepends on your address
9–123 high schoolsDepends on your address

Rio is in Martin County School District.

B+School gradeSee 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

Rio is unincorporated, so Martin County is the local government.

Local governmentMartin CountyRio is a census-designated place: no town hall of its ownCensus
Who runs elections hereMartin Supervisor of ElectionsElections here are run by Martin County (county election office). PO Box 1257, Stuart, FL 34995 · (772) 288-5637 · [email protected]FVAP, Nov 2023
Register to voteOnlineIn Florida you can register online until 29 days before Election Day, in person until 29 days before Election Day, or by mail (postmarked 29 days before).vote.govCheck your registration and polling placeregistration.elections.myflorida.comThe state’s voter lookup

Election office: FVAP local election office directory, updated Nov 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 17, 2025.

ZIP codes & area codes

Rio is in ZIP code 34957

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

ZIPPost office nameShare of RioZIP’s residents in Rio
34957Jensen Beach, FL100%4%
Area code772Wikidata

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.

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

Questions about living in Rio

Who supplies Rio’s drinking water, and has it had violations?

Martin Co Utilities (EPA ID FL4431891). It reported no health-based violations to EPA in the five years to October 2026; 86% of systems its size had none. Its latest lead 90th percentile was 4.0 ppb (Jan–Dec 2023), against a 15 ppb action level.

Who provides electricity in Rio?

FPL (Florida Power & Light Co.), an investor-owned utility. Its homes paid about 14.6¢ per kWh in 2025 (EIA).

What internet providers serve Rio?

Xfinity, AT&T, T-Mobile, Verizon (FCC, as of December 2025).

What ZIP codes are in Rio?

34957. Census 2020 ZIP Code Tabulation Areas.

What school district is Rio in?

Martin County School District.

How do I register to vote in Rio?

In Florida you can register online until 29 days before Election Day, in person until 29 days before Election Day, or by mail (postmarked 29 days before). Elections here are run by the Martin Supervisor of Elections. Check your registration at registration.elections.myflorida.com.

Sources & dates

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

  • Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
  • 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 17, 2025 (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.