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The Theresa handbook

Living in Theresa, WI: what to set up and who to call

Theresa runs its own elections, so the Town of Theresa Clerk, not a county office, keeps the voter rolls. Two school districts split the grades in Theresa: Hartford Union High School District and Lomira School District.

Which school will my kid attend?How do I register to vote?ZIP codes

I’m new in town

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

PowerWe Energiesinvestor-owned utility · 20.5¢/kWhMore →Internet7 providers90% of addresses get 100/20 MbpsMore →Trash & dumpNot on file yetWe don’t have Theresa’s trash rules yetMore →SchoolLomira and Hartford Union High districtsWhich school depends on grade and addressMore →Register to voteOnlineRules from vote.govMore →ZIP codes53091, 53050, 53048Where people live, not P.O. boxesMore →
Home services

Power, water and internet

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

Electricity

Power comes from We Energies

We Energies (Wisconsin Electric Power Co.), an investor-owned utility, serves all of Theresa. Its homes paid an average of 20.5¢ per kWh in 2025, about $131 a month (its average across Wisconsin).

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

Internet

7 home internet providers serve Theresa

90% of 506 addresses can get 100/20 Mbps; 80% can get fiber.

ProviderTechnologyAddressesFastest (Mbps)
SpectrumFiber, Cable89%1,000/1,000
FrontierDSL36%90/5
Bertram CommunicationsFixed wireless87%100/20
VerizonFixed wireless47%300/20
Bug TusselFixed wireless28%50/8
T-MobileFixed wireless14%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 Theresa’s trash rules yet

Pickup rules, the dump and recycling in Theresa.

Trash, recycling and bulk pickupNot on fileOpenStreetMap lists no public drop-off in Theresa or within 5 miles (as of Oct 9, 2026); map coverage varies by town.
Schools

Where your child goes to school

Public school districts and the school path by grade.

Theresa kids go to
PK–63 schoolsDepends on your address
7–122 schoolsDepends on your address

Theresa is in two districts that split the grades: Hartford Union High School District and Lomira School District.

BSchool gradeSee Schools →

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

Government & voting

Town hall and registering to vote

Who to call, and how to register.

Town HallBudget, officials, electionsTheresa’s government in one page
Who runs elections hereTown of Theresa ClerkTheresa runs its own elections (town clerk). W913 County Road DD, Theresa, WI 53091 · (920) 583-9185 · [email protected]FVAP, May 2026
Register to voteOnlineIn Wisconsin you can register online until 20 days before Election Day, in person up to and including Election Day, or by mail (postmarked 20 days before).vote.govCheck your registration and polling placemyvote.wi.govThe state’s voter lookup

Election office: FVAP local election office directory, updated May 2026; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.

ZIP codes & area codes

Theresa spans 3 ZIP codes

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

ZIPPost office nameShare of TheresaZIP’s residents in Theresa
53091Theresa, WI62%33%
53050Mayville, WI36%6%
53048Lomira, WI2%1%

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 roomAurora Medical Center Washington County13.6 miles awayGet a library cardTheresa Public Library290 Mayville St. · (920) 488-2342

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

Questions about living in Theresa

Who provides electricity in Theresa?

We Energies (Wisconsin Electric Power Co.), an investor-owned utility. Its homes paid about 20.5¢ per kWh in 2025 (EIA).

What internet providers serve Theresa?

Spectrum, Frontier, Bertram Communications, Verizon, Bug Tussel, T-Mobile (FCC, as of December 2025).

What ZIP codes are in Theresa?

53091 (62%), 53050 (36%), 53048 (2%), by share of residents. Census 2020 ZIP Code Tabulation Areas.

What school district is Theresa in?

Hartford Union High School District and Lomira School District. Parts of the city are in Mayville School District.

How do I register to vote in Theresa?

In Wisconsin you can register online until 20 days before Election Day, in person up to and including Election Day, or by mail (postmarked 20 days before). Elections here are run by the Town of Theresa Clerk. Check your registration at myvote.wi.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.