| State Abbreviation | MD |
| Statehood | April 28, 1788 |
| State Capital | Annapolis |
| State Size | Total (Land + Water): 12,407 sq miles; Land Only: 9,774 sq miles |
| Number of Counties | 23 |
| State Population (2010) | 5,773,552 |
| Electoral Votes | 10 |
| State Quarter Issue Date | 13-Mar-00 |
| State Motto | Fatti maschii, parole femine (Manly deeds, womanly words) |
| State Flower | Black-eyed susan |
| State Bird | Baltimore Oriole |
| Nickname | Free State, Old Line State |
| Area Codes | 227, 240, 249, 280, 301, 410, 443, 667 |
| Top 5 Cities (2010 population) | Baltimore (620,961) |
| Frederick (65,239) |
| Rockville (61,209) |
| Gaithersburg (59,933) |
| Bowie (54,727) |
| Major Sports Teams | MLB: Baltimore Orioles |
| NFL: Baltimore Ravens |
| Federal Prisons | None |
| Federal Correctional Institutions | Federal Correctional Institution, Cumberland |
| State Prisons | Baltimore City Correctional Center |
| Baltimore City Detention Center (formerly historic Baltimore City Jail) |
| Baltimore Pre-Release Unit |
| Baltimore Pre-Release Unit for Women |
| Baltimore Pre-Release Unit for Women-Annex |
| Brockbridge Correctional Facility – Jessup |
| Chesapeake Detention Facility (previously the Maryland Correctional Adjustment Center – also known as “Super Max”) |
| Eastern Correctional Institution – Princess Anne, Somerset County |
| Eastern Pre-Release Unit – Princess Anne, Somerset County |
| Home Detention Unit |
| Jessup Pre-Release Unit – Jessup |
| Maryland Correctional Institution – Hagerstown (constructed mid-1930s) |
| Jessup Correctional Institution – Jessup |
| Maryland Correctional Institution – Jessup |
| Maryland Correctional Institution – Women – Jessup |
| Maryland Correctional Training Center – Hagerstown |
| Maryland House of Correction Annex – Jessup |
| Maryland Reception, Diagnostic and Classification Center – Baltimore |
| Metropolitan Transition Center – Baltimore (formerly historic Maryland Penitentiary, established 1811) |
| North Branch Correctional Institution – Cumberland |
| Patuxent Institution – Jessup |
| Poplar Hill Pre-Release Unit |
| Roxbury Correctional Institution – Hagerstown |
| Southern Maryland Pre-Release Unit |
| Herman L. Toulson Boot Camp – Jessup |
| Western Correctional Institution – Cumberland |
