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| City | Petersburg |
| State | New York (NY) |
| County | Rensselaer |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 42.749523 |
| Longitude | -73.340111 |
| Population | 1,600 |
| Density | 18.0 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 12138 |
| Area Code | 518 |
| County Seat | Troy |
Petersburg is a locality in Rensselaer County, New York, United States. It has a population of approximately 1,600. The population density is 18.0 people per km². Petersburg is located at 42.7495°N, 73.3401°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 12138.
Petersburg rests in a quiet cradle of rolling hills, where the land begins its patient ascent towards the Taconic Mountains, forming a landscape of verdant fields and dense woodlands. It lies 17.9 miles east of Troy, NY (from Troy, NY: bearing 85°T), and is situated 7.4 miles west-north-west of Williamstown. The air here, particularly in the lingering light of late afternoon, often carries the clean, sharp scent of pine and damp earth, a subtle perfume that hints at the wilder country beyond. Brooks, fed by the higher elevations, thread their way through the terrain, their waters glinting like scattered mica as they tumble over stones, eventually joining larger waterways that carve their way through the Rensselaer County countryside. The houses of Petersburg, many with broad porches and sturdy clapboard, seem to stand in quiet contemplation of the surrounding natural beauty, their forms softened by the passage of seasons. The history of Petersburg is etched not in grand monuments, but in the quieter narratives of its agricultural roots and the resilience of its people. For generations, this land has sustained those who worked its soil, and the echoes of that labor can still be felt in the broad, open fields that punctuate the forested slopes. While the economy has diversified, remnants of its past linger, perhaps in a weathered barn that stands sentinel over a meadow, or in the unhurried cadence of life that still prevails. The community, small and self-contained, fosters a sense of shared experience, where the changing colors of autumn or the deep hush of winter snow become collective events. Petersburg, in its unassuming way, offers a profound sense of place, a quiet testament to the enduring spirit of rural life.
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This page provides an embedded street and satellite map of Petersburg, New York — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 42.749523, -73.340111. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Petersburg and Rensselaer County.
Detailed location data for Petersburg includes the ZIP code (12138), telephone area code (518), county seat of Rensselaer County (Troy), and school district assignment. These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Petersburg is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |