Kupreanof is a city in Petersburg Borough, Alaska, home to about 10 people across 3.0 square miles. It has no ZIP code of its own: it’s part of 99833.
Homes sold for a median of $241 per square foot in the three months ending August 2026, a seller’s market.
Mostly Petersburg; part is in Kupreanof
Each card is that ZIP code’s whole market, including any part outside Kupreanof. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Kupreanof’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Ted Stevens Anchorage International Airport (ANC)670 miles away |
|---|---|
| Closer regional airport | Petersburg James A Johnson Airport (PSG)8 miles away |
| Nearest city of 250,000+ | Anchorage, AK647 miles away |
Straight-line distances from the center of Kupreanof; 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.
Kupreanof had 21 residents in the 2020 census, down 9% since 2000.
It’s the 312th largest of 321 towns in Alaska by population.
Source: U.S. Census Bureau decennial censuses.
Average highs peak around 62°F in summer, and winter lows average 27°F. About 110.3 inches of rain and melted snow fall in a typical year, with about 86 inches of snow.
Source: NOAA 1991–2020 climate normals, Petersburg 1, AK weather station (9 miles away).
912 jobs at 188 businesses in Petersburg Borough. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
30 doctors and other health care providers list an office in Kupreanof.
Nearest hospitals
Providers with an office here
| Primary care doctors | 6 |
|---|---|
| Dentists | 3 |
| Nurse practitioners and physician assistants | 4 |
| Mental health providers | 13 |
| Physical and occupational therapists | 4 |
| Pharmacies | 1 |
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.
Public schools here are run by Petersburg Borough School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Rae C. Stedman ElementaryPetersburg | Pre-K–5 | 206 | Public | 7.9 mi |
| Mitkof Middle SchoolPetersburg | 6–8 | 114 | Public | 7.8 mi |
| Petersburg High SchoolPetersburg | 9–12 | 144 | Public | 7.8 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 Petersburg.
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.