Grundy County
OKLocate's data coverage for Grundy County includes address level insights, mapping layers, property profiles and census demographics.
Grundy County is part of the Chicago-Naperville-Elgin, IL-IN metropolitan statistical area.
LiDAR measurements, aerial imagery, typeahead, geocoding and census demographics behind one API key, on one flat monthly rate, and every result is yours to store with no time limit. No other location API puts that combination under permissive licensing.
Address level data
- Forward geocoding · Address to rooftop coordinate
- Reverse geocoding · Coordinate to nearest address
- Typeahead · About 100 ms
- County FIPS on every result
- Census tract on every result (Q4 2026)
- Place on every result (Q4 2026)
- School district on every result (Q4 2026)
- Legislative districts on every result (Q4 2026)
Mapping
- Base map · Vector tiles, your own styling
- Aerial imagery · To zoom 18, 30 cm
- High-resolution aerial, zoom 16 to 18 · 30 cm
- Flood zone boundaries · FEMA NFHL
- School district boundaries
- Place boundaries
- ZIP code boundaries
- Census tract boundaries
- Legislative boundaries (Q4 2026)
Property measurements
- Measured property profiles · 78 fields per home
- Roof, solar and pool measurements · Derived from LiDAR
- Viewable LiDAR point cloud per home
- Search the county on any measured field
Demographics
- Population and households
- Housing units, owner and renter
- Median home value and rent
- Median household income
- Year built and unit types
- FEMA flood share and zone breakdown
Grundy County by the numbers
- Homes measured
- 22,069
- Housing units
- 21,384
- Population
- 53,219
- Owner occupied
- 15,319
- Median home value
- $269,944
- Median household income
- $92,173
- Median year built
- 1987
- Census tracts
- 10
- Land area
- 418 sq mi
Flood zones
11% of Grundy County's land lies inside a FEMA Special Flood Hazard Area. That is higher than 77% of US counties. The largest zones are X at 89% and AE at 5.9%. This is a map overlay for analysis, not a flood determination.
- Zone X
- 89.06%
- Zone AE
- 5.86%
- Zone A
- 5.08%