| County : | Baltimore County |
| State : | Maryland (MD) |
| Land Area : | 598.30 sq mi |
| Water Area : | 83.45 sq mi |
| Latitude : | 39.4431666 |
| Longitude : | -76.6165693 |
| Population (2010): | 805,029 |
| Population Estimate (2012) : | 807,318 |
| Population Density : | 1,345.53/sq mi |
| Housing Units (2012) : | 335,622 |
| Median Household Income (2012) : | $66,068 (Maryland : $72,999, USA : $53,046) |
| Median Family Income (2012) : | $81,332 (Maryland : $88,092, USA : $64,585) |
| Median House Price (2012) : | $263,900 (Maryland : $304,900, USA : $181,400) |
Baltimore County Cities / Towns
| Arbutus (20,483) | Baltimore Highlands (7,019) | Bowleys Quarters (6,755) |
| Carney (29,941) | Catonsville (41,567) | Cockeysville (20,776) |
| Dundalk (63,597) | Edgemere (8,669) | Essex (39,262) |
| Garrison (8,823) | Hampton (5,052) | Kingsville (4,318) |
| Lansdowne (8,409) | Lochearn (25,333) | Lutherville (6,504) |
| Mays Chapel (11,420) | Middle River (25,191) | Milford Mill (29,042) |
| Overlea (12,275) | Owings Mills (30,622) | Parkville (30,734) |
| Perry Hall (28,474) | Pikesville (30,764) | Randallstown (32,430) |
| Reisterstown (25,968) | Rosedale (19,257) | Rossville (15,147) |
| Timonium (9,925) | Towson (55,197) | White Marsh (9,513) |
| Woodlawn (37,879) |
Baltimore County Zip Codes
| 21013 (4,653) | 21030 (24,355) | 21031 (4) |
| 21043 (42,246) | 21051 (279) | 21052 (303) |
| 21053 (3,305) | 21057 (4,112) | 21071 (497) |
| 21074 (15,084) | 21082 (654) | 21085 (16,171) |
| 21087 (5,451) | 21093 (36,465) | 21102 (11,751) |
| 21104 (4,601) | 21105 (65) | 21111 (4,903) |
| 21117 (53,778) | 21120 (6,967) | 21128 (12,802) |
| 21131 (7,253) | 21133 (29,998) | 21136 (33,781) |
| 21152 (5,544) | 21153 (323) | 21155 (2,371) |
| 21156 (358) | 21161 (5,490) | 21162 (3,655) |
| 21163 (7,026) | 21204 (20,253) | 21206 (50,846) |
| 21207 (48,133) | 21208 (33,917) | 21209 (26,465) |
| 21210 (14,292) | 21212 (32,322) | 21215 (60,161) |
| 21219 (9,379) | 21220 (39,199) | 21221 (42,154) |
| 21222 (55,786) | 21224 (49,134) | 21227 (33,534) |
| 21228 (47,577) | 21229 (45,213) | 21234 (69,752) |
| 21236 (38,474) | 21237 (30,059) | 21239 (28,793) |
| 21244 (34,611) | 21250 (3,205) | 21252 (2,872) |
| 21286 (19,206) |