Also See Castalia, NC: ZIP Codes & Maps
The Town of Castalia had a population of 257 as of July 1, 2025.
The primary coordinate point for Castalia is located at latitude 36.0818 and longitude -78.0575 in Nash County. The formal boundaries for the Town of Castalia encompass a land area of 0.75 sq. miles and a water area of 0 sq. miles. Nash County is in the Eastern time zone (GMT -5).
The Town of Castalia has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.
The Town of Castalia is located within Township of Castalia, a minor civil division (MCD) of Nash County.
| POPULATION | |
|---|---|
| Total Population | 257 (100%) | 
| Population in Households | 257 (100.0%) | 
| Population in Families | 198 (77.0%) | 
| Population in Group Quarters1 | 0 | 
| Population Density | 340 | 
| Diversity Index2 | 63 | 
| INCOME | |
| Median Household Income | $47,117 | 
| Average Household Income | $56,324 | 
| % of Income for Mortgage4 | 100% | 
| Per Capita Income | $23,450 | 
| Wealth Index5 | 38 | 
| Socioeconomic Status Index6 | Low (44.4) | 
| HOUSING | |
|---|---|
| Total HU (Housing Units) | 130 (100%) | 
| Owner Occupied HU | 81 (62.3%) | 
| Renter Occupied HU | 26 (20.0%) | 
| Vacant Housing Units | 23 (17.7%) | 
| Median Home Value | $1,125,000 | 
| Average Home Value | $1,169,907 | 
| Housing Affordability Index3 | 15 | 
| HOUSEHOLDS | |
| Total Households | 107 | 
| Average Household Size | 2.40 | 
| Family Households | 75 | 
| Average Family Size | 3.00 | 
| GROWTH RATE / YEAR | 2020-2025 | 2025-2030 | 
|---|---|---|
| Population | -0.51% | -0.47% | 
| Households | -0.18% | 0.19% | 
| Families | -3.43% | |
| Median Household Income | 0.04% | |
| Per Capita Income | 2.47% | |
| Owner Occupied HU | 0.25% | 
The table below compares Castalia to the other 776 incorporated cities, towns and CDPs in North Carolina 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 | # 684 | 12th | 
| Population Density | # 552 | 29th | 
| Median Household Income | # 605 | 22nd | 
| Housing Affordability Index | # 49 | 6th | 
| Per Capita Income | # 684 | 12th | 
| Diversity Index | # 241 | 69th | 
Additional comparisons and rankings can be made with a VERY EASY TO USE North Carolina Census Data Comparison Tool.
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