City evidence profile
Castle Population 2020
United States 41.078805, -81.554948
2020 population · Estimate
52,640
UN WUP Degree of Urbanization city population at mid-year
Location record
Administrative area not supplied
United States · USA
CityEvidence derived analysis
Research snapshot
The latest city density observation is 2,025 people per km² for 2020. The latest city land-area observation is 26.0 km² for 2020.
2020 density2,025people/km²
Population through time
One source series, shown without converting estimates into “live” counters.
| Year | Population | Type | Source |
|---|---|---|---|
| 1975 | 52,260 | Estimate | UN World Urbanization Prospects 2025 |
| 2015 | 52,402 | Estimate | UN World Urbanization Prospects 2025 |
| 2020 | 52,640 | Estimate | UN World Urbanization Prospects 2025 |
Context, without fake precision
Country-level indicators are labelled as country context and are never presented as city measurements.
Country population growth
0.5%
2025 · World Bank · national value
Country urban population
80.2%
2025 · World Bank · national value
Country life expectancy
78.9
2024 · World Bank · national value
Country population
341,784,857
2025 · World Bank · national value
City population density
2,025
2020 · UN World Urbanization Prospects 2025 · people/km²
City land area
26.0
2020 · UN World Urbanization Prospects 2025 · km²
Sources & provenance
See which dataset supports each city measurement and which figures are country-level context.
UN World Urbanization Prospects 2025City population · 2020 · Estimate · refreshed 2026-10-12
Open source ↗UN World Urbanization Prospects 2025City population density · 2020 · refreshed 2026-10-12
Open source ↗UN World Urbanization Prospects 2025City land area · 2020 · refreshed 2026-10-12
Open source ↗World Bank Open DataNational context series · latest population observation 2025 · refreshed 2026-10-12
Open source ↗GeoNames geographic referenceCoordinates, country and administrative-area identity used for place reference and matching.
Source notes →🛡️ Research standard
Source-backed profile
This profile has qualifying city-level evidence, clear source labels and enough supporting context for a full research page.
How profiles are verified