Population Data for Maryland and U.S.
- US Bureau of the Census - The source of current and historical demographic data, employment information, income data, and related reports.
- Educational Attainment in the United States - This portion of the web site of the Census Bureau is devoted to historical data concerning educational attainment of U.S. citizens by age, race, sex, and ethnicity.
- American FactFinder- Basic Facts
- American FactFinder- Data Sets
- Statistical Abstract of the United States
- Census 2000 Products and Data
- General Population Data