MapStats: Worcester County
- Statistics for the county, including agricultural, population, immigration, demographics, business, crime, energy, and environment.
- http://www.fedstats.gov/qf/states/25/25027.html

Worcester Area Historic Maps
- Historic USGS maps covering Worcester, Paxton, Grafton, Webster and Quinsigamond.
- http://docs.unh.edu/towns/WorcesterMassachusettsMapList.htm