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Background • Federal Census Summary • State Map with County Boundaries • Counties • Links to State Resources Background
Maryland was one of the 13 original States. It helped form the District of Columbia in 1791; its boundaries have been substantially unchanged since then, although the Maryland-West Virginia boundary was in dispute as late as 1910.
| Capital: Annapolis | Total Area: 12,417 sq mi | ||
| Latitude: 37°53'N to 39°43'N | Longitude: 75°4'W to 79°33'W | ||
| Last Significant Boundary Change: 1800 | |||
Census coverage has included the entire State from 1790 on. The 1790 population includes the present area of the District of Columbia, separated from Maryland in 1791. The 1840 results for Montgomery County are from a re-enumeration of the population as of 1840, conducted in 1841.
| 1790: 319,728 | 1800: 341,548 | 1810: 380,546 | 1820: 407,350 |
| 1830: 447,040 | 1840: 470,019 | 1850: 583,034 | 1860: 687,049 |
| 1870: 780,894 | 1880: 934,943 | 1890: 1,042,390 | 1900: 1,188,044 |
| 1910: 1,295,346 | 1920: 1,449,661 | 1930: 1,631,526 | 1940: 1,821,244 |
| 1950: 2,343,001 | 1960: 3,100,689 | 1970: 3,922,399 | 1980: 4,216,975 |
| 1990: 4,781,468 | 2000: 5,296,486 |