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Main near Elm, CastinePhoto: Nyttend · Public domain
The Castine handbook

Living in Castine, OH: what to set up and who to call

All of Castine gets its mail under one ZIP code, 45304. New Madison Public Library, 5.2 miles away, is the closest library to Castine.

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

I’m new in town

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

PowerAES Ohioinvestor-owned utility · 16.1¢/kWhMore →Internet9 providers97% of addresses get 100/20 MbpsMore →Trash & dumpNot on file yetWe don’t have Castine’s trash rules yetMore →SchoolArcanum-Butler Local School DistrictWhich school depends on grade and addressMore →Register to voteOnlineRules from vote.govMore →ZIP code45304Where people live, not P.O. boxesMore →
Home services

Power, water and internet

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

Electricity

Power comes from AES Ohio

AES Ohio (Dayton Power & Light Co.), an investor-owned utility, serves all of Castine. Its homes paid an average of 16.1¢ per kWh in 2025, about $158 a month (its average across Ohio, for customers on its standard service). Ohio lets you buy power from another supplier; 70% of AES Ohio’s home customers do, and AES Ohio still delivers it.

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

Internet

9 home internet providers serve Castine

97% of 53 addresses can get 100/20 Mbps; 0% can get fiber.

ProviderTechnologyAddressesFastest (Mbps)
SpectrumCable96%1,000/35
BrightspeedDSL15%80/10
VerizonFixed wireless91%300/20
Ohio Transparent TelecomFixed wireless89%100/20
BridgeMAXX Suncoast BroadbandFixed wireless85%10/1
SkymeshFixed wireless34%50/10

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

Trash & recycling

We don’t have Castine’s trash rules yet

Pickup rules, the dump and recycling in Castine.

Trash, recycling and bulk pickupNot on fileOpenStreetMap lists no public drop-off in Castine 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.

Castine kids go to
K–4Arcanum Elementary Schoolin Arcanum
5–8Butler Middle Schoolin Arcanum
9–12Arcanum High Schoolin Arcanum

Castine is in Arcanum-Butler Local 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

Town hall and registering to vote

Who to call, and how to register.

Town HallBudget, officials, electionsCastine’s government in one page
Who runs elections hereDirector, Darke County Board of ElectionsElections here are run by Darke County (county election office). 300 Garst Ave, Ste. 7, Greenville, OH 45331-2389 · (937) 548-1835 · [email protected]FVAP, Aug 2019
Register to voteOnlineIn Ohio you can register online until 30 days before Election Day, in person until 30 days before Election Day, or by mail (postmarked 30 days before).vote.govCheck your registration and polling placevoterlookup.ohiosos.govThe state’s voter lookup

Election office: FVAP local election office directory, updated Aug 2019; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Aug 3, 2026.

ZIP codes & area codes

Castine is in ZIP code 45304

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

ZIPPost office nameShare of CastineZIP’s residents in Castine
45304Arcanum, OH100%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 roomWayne Hospital10.9 miles awayGet a library cardNew Madison Public Library142 S. Main St. · (937) 996-1741

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

Questions about living in Castine

Who provides electricity in Castine?

AES Ohio (Dayton Power & Light Co.), an investor-owned utility. Its homes paid about 16.1¢ per kWh in 2025 (EIA).

What internet providers serve Castine?

Spectrum, Brightspeed, Verizon, Ohio Transparent Telecom, BridgeMAXX Suncoast Broadband, Skymesh (FCC, as of December 2025).

What ZIP codes are in Castine?

45304. Census 2020 ZIP Code Tabulation Areas.

What school district is Castine in?

Arcanum-Butler Local School District.

How do I register to vote in Castine?

In Ohio you can register online until 30 days before Election Day, in person until 30 days before Election Day, or by mail (postmarked 30 days before). Elections here are run by the Director, Darke County Board of Elections. Check your registration at voterlookup.ohiosos.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 Aug 3, 2026 (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.