Watertown Township (Sanilac County) is a township in Sanilac County, Michigan, home to about 1,163 people across 35 square miles. It has no ZIP code of its own: it’s part of 48401, 48419 and 48471.
Homes sold for a median of $183 per square foot across 3 ZIP codes in the three months ending August 2026, and 0 of 3 were seller’s markets.
Mostly Sanilac; part is in Watertown Township (Sanilac County)
Mostly Sanilac; part is in Watertown Township (Sanilac County)
Mostly Sandusky; part is in Watertown Township (Sanilac County)
Each card is that ZIP code’s whole market, including any part outside Watertown Township (Sanilac County). Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Watertown Township (Sanilac County)’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Detroit Metropolitan Wayne County Airport (DTW)87 miles away |
|---|---|
| Closer regional airport | Bishop International Airport (FNT)56 miles away |
| Nearest city of 250,000+ | Detroit, MI72 miles away |
| Nearest city of 1 million+ | Chicago, IL271 miles away |
Straight-line distances from the center of Watertown Township (Sanilac County); driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Watertown Township (Sanilac County) had 1,263 residents in the 2020 census, down 8% since 2000.
It’s the 1117th largest of 1,531 towns in Michigan by population.
Sanilac County grew from 35,055 residents in 1900 to 40,611 in 2020.
Sanilac County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 78°F in summer, and winter lows average 16°F. About 35.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Lexington Wtp, MI weather station (17 miles away).
8,997 jobs at 848 businesses in Sanilac County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
111 doctors and other health care providers list an office in Watertown Township (Sanilac County)’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 4 |
|---|---|
| Specialist doctors | 5 |
| Dentists | 7 |
| Nurse practitioners and physician assistants | 16 |
| Mental health providers | 63 |
| Physical and occupational therapists | 9 |
| Optometrists | 5 |
| Chiropractors | 2 |
| Pharmacies | 5 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (2 nearby)
Grocery stores (1 nearby)
Pharmacies (1 nearby)
Libraries (2 nearby)
Counts are within about 4 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Carsonville-Port Sanilac School District, Sandusky Community School District, Sanilac ISD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| CarsonvillePort Sanilac Elementary SchoolCarsonville | Pre-K–5 | 165 | Public | 6.9 mi |
| Sandusky Elementary SchoolSandusky | Pre-K–6 | 471 | Public | 1.4 mi |
| Sanilac ISD Special Education ServicesSandusky | Pre-K–12 | 55 | Special Education | 1.7 mi |
| CarsonvillePort Sanilac HSCarsonville | 6–12 | 187 | Public | 8.8 mi |
| CarsonvillePort Sanilac Learning CenterCarsonville | 6–12 | 53 | Alternative Education | 8.9 mi |
| Sandusky JuniorSenior High SchoolSandusky | 7–12 | 460 | Public | 1.2 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Sandusky, Sanilac, Washington Township (Sanilac County), Custer Township (Sanilac County), Bridgehampton, Elmer Township (Sanilac County), Moore, Forester, Lexington, Buel and Elk Township (Sanilac County).
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.