Also See Petersburg, ND: ZIP Codes & Maps
The City of Petersburg had a population of 130 as of July 1, 2025.
The primary coordinate point for Petersburg is located at latitude 48.0111 and longitude -98.0015 in Nelson County. The formal boundaries for the City of Petersburg encompass a land area of 1.03 sq. miles and a water area of 0.01 sq. miles. Nelson County is in the Central time zone (GMT -6).
The City of Petersburg has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.
POPULATION | |
|---|---|
| Total Population | 130 (100%) | 
| Population in Households | 130 (100.0%) | 
| Population in Families | 89 (68.5%) | 
| Population in Group Quarters1 | 0 | 
| Population Density | 126 | 
| Diversity Index2 | 16 | 
INCOME | |
| Median Household Income | $59,023 | 
| Average Household Income | $76,956 | 
| % of Income for Mortgage4 | 14% | 
| Per Capita Income | $39,662 | 
| Wealth Index5 | 55 | 
| Socioeconomic Status Index6 | Moderate (63.2) | 
HOUSING | |
|---|---|
| Total HU (Housing Units) | 88 (100%) | 
| Owner Occupied HU | 57 (64.8%) | 
| Renter Occupied HU | 10 (11.4%) | 
| Vacant Housing Units | 21 (23.9%) | 
| Median Home Value | $127,679 | 
| Average Home Value | $135,833 | 
| Housing Affordability Index3 | 164 | 
HOUSEHOLDS | |
| Total Households | 67 | 
| Average Household Size | 1.94 | 
| Family Households | 28 | 
| Average Family Size | 3.00 | 
GROWTH RATE / YEAR | 
2020-2025 | 2025-2030 | 
|---|---|---|
| Population | -4.11% | -1.59% | 
| Households | 0.29% | -0.30% | 
| Families | 9.46% | |
| Median Household Income | 5.28% | |
| Per Capita Income | 4.68% | |
| Owner Occupied HU | 1.03% | 
The table below compares Petersburg to the other 406 incorporated cities, towns and CDPs in North Dakota by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
| Variable Description | Rank | Percentile | 
|---|---|---|
| Total Population | # 204 | 50th | 
| Population Density | # 297 | 27th | 
| Median Household Income | # 362 | 11th | 
| Housing Affordability Index | # 342 | 84th | 
| Per Capita Income | # 321 | 21st | 
| Diversity Index | # 241 | 41st | 
Additional comparisons and rankings can be made with a VERY EASY TO USE North Dakota Census Data Comparison Tool.
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