Savannah, Georgia vs Charleston, South Carolina for retirement

Use: Planning estimate; not used to determine comparison winners.

Evidence: Hybrid

Reason: Budget Ranking Ineligible

Basis: Estimated

Source: U.S. Census Bureau; U.S. Bureau of Labor Statistics

Observed: 2026-07-09T21:54:17.800Z

How measured: Model-limited couple budget: ACS 2BR gross rent plus disclosed food, transportation, and age-65-plus healthcare factors. Added utilities are $0 in the budget breakdown to avoid double-counting because ACS gross rent already includes tenant-paid utilities. Property tax is not applicable to this renter budget; no model buffer is included.

Use: Planning estimate; not used to determine comparison winners.

Evidence: Hybrid

Reason: Budget Ranking Ineligible

Basis: Estimated

Source: U.S. Census Bureau; U.S. Bureau of Labor Statistics

Observed: 2026-07-09T21:54:17.800Z

How measured: Model-limited couple budget: ACS 2BR gross rent plus disclosed food, transportation, and age-65-plus healthcare factors. Added utilities are $0 in the budget breakdown to avoid double-counting because ACS gross rent already includes tenant-paid utilities. Property tax is not applicable to this renter budget; no model buffer is included.

Use: Planning estimate; not used to determine comparison winners.

Evidence: Modeled

Basis: City-level

Source: OpenStreetMap healthcare amenities static probe

How measured: OpenStreetMap healthcare amenities within the city radius are mapped to fixed access bands. Sparse mapped amenities should be read as limited local evidence, not a clinical quality rating.

Use: Planning estimate; not used to determine comparison winners.

Evidence: Modeled

Basis: City-level

Source: OpenStreetMap healthcare amenities static probe

How measured: OpenStreetMap healthcare amenities within the city radius are mapped to fixed access bands. Sparse mapped amenities should be read as limited local evidence, not a clinical quality rating.

Use: Planning estimate; not used to determine comparison winners.

Evidence: Modeled

Reason: Modeled Requires Reviewed Decision

Basis: Modeled

Source: Centers for Medicare & Medicaid Services NPPES NPI Registry

Observed: 2026-07-16T04:41:40.941Z

How measured: Count of unique active location addresses among organization NPIs with Community/Retail Pharmacy taxonomy matching Savannah, GA in the CMS/NPPES NPI Registry. Multi-page results are unioned by NPI until stable. This is exact city/state registry coverage, not a drive-time or radius-weighted count.

Use: Planning estimate; not used to determine comparison winners.

Evidence: Modeled

Reason: Modeled Requires Reviewed Decision

Basis: Modeled

Source: Centers for Medicare & Medicaid Services NPPES NPI Registry

Observed: 2026-07-16T04:41:40.941Z

How measured: Count of unique active location addresses among organization NPIs with Community/Retail Pharmacy taxonomy matching Charleston, SC in the CMS/NPPES NPI Registry. Multi-page results are unioned by NPI until stable. This is exact city/state registry coverage, not a drive-time or radius-weighted count.

Use: Planning estimate; not used to determine comparison winners.

Availability: Source unavailable

Evidence: Modeled

Reason: Manual Review:Implausibly Sparse Property Crime Rate Reporting Signal

Basis: Published context

Source: Source unavailable

How measured: The reviewed direct crime observation did not pass the publication contract: manual_review:implausibly_sparse_property_crime_rate_reporting_signal.

Evidence: Derived

Basis: City-level

Source: FBI Crime Data Explorer

Observed: 2024-12-31T23:59:59.000Z

How measured: 2024 annual rate calculated from all 12 FBI Crime Data Explorer monthly offense-rate observations for Charleston Police Department (SC0100100).

Use: Planning estimate; not used to determine comparison winners.

Availability: Source unavailable

Evidence: Modeled

Reason: Manual Review:Implausibly Sparse Property Crime Rate Reporting Signal

Basis: Published context

Source: Source unavailable

How measured: The reviewed direct crime observation did not pass the publication contract: manual_review:implausibly_sparse_property_crime_rate_reporting_signal.

Evidence: Derived

Basis: City-level

Source: FBI Crime Data Explorer

Observed: 2024-12-31T23:59:59.000Z

How measured: 2024 annual rate calculated from all 12 FBI Crime Data Explorer monthly offense-rate observations for Charleston Police Department (SC0100100).

Use: Planning estimate; not used to determine comparison winners.

Evidence: Modeled

Reason: Modeled Requires Reviewed Decision

Basis: Modeled

Source: Open-Meteo / Copernicus CAMS

Observed: 2026-05-18T18:10:58.633Z

How measured: Air Quality is scored from the 2021-2025 average of 43824 hourly Copernicus CAMS PM2.5 model values at the city coordinate. No nearby qualifying EPA multiyear monitor is available, so this remains explicitly modeled.

Use: Planning estimate; not used to determine comparison winners.

Evidence: Modeled

Reason: Modeled Requires Reviewed Decision

Basis: Modeled

Source: Open-Meteo / Copernicus CAMS

Observed: 2026-05-18T17:35:06.466Z

How measured: Air Quality is scored from the 2021-2025 average of 43824 hourly Copernicus CAMS PM2.5 model values at the city coordinate. No nearby qualifying EPA multiyear monitor is available, so this remains explicitly modeled.

Use: Planning estimate; not used to determine comparison winners.

Evidence: Modeled

Reason: Model Limited

Basis: Estimated

Source: U.S. Environmental Protection Agency National Walkability Index

Observed: 2026-07-10T06:36:05.983Z

How measured: Population-weighted mean of EPA National Walkability Index block groups whose calculated polygon centroid falls inside the Census city-geography boundary; normalized from EPA 1-20 to 0-100 after aggregation. EPA NWI is a historical built-environment screen, not a current pedestrian audit. It does not measure every street, disability access, terrain, weather, or current transit frequency.

Use: Planning estimate; not used to determine comparison winners.

Evidence: Modeled

Reason: Model Limited

Basis: Estimated

Source: U.S. Environmental Protection Agency National Walkability Index

Observed: 2026-07-10T06:36:05.983Z

How measured: Population-weighted mean of EPA National Walkability Index block groups whose calculated polygon centroid falls inside the Census city-geography boundary; normalized from EPA 1-20 to 0-100 after aggregation. EPA NWI is a historical built-environment screen, not a current pedestrian audit. It does not measure every street, disability access, terrain, weather, or current transit frequency.

Evidence: Observed

Basis: City-level

Source: Speedtest by Ookla Open Data

How measured: Weighted median of fixed-broadband tile average download speeds within city radius, weighted by tests. Observation window ended 2026-03-31.

Evidence: Observed

Basis: City-level

Source: Speedtest by Ookla Open Data

How measured: Weighted median of fixed-broadband tile average download speeds within city radius, weighted by tests. Observation window ended 2026-03-31.