Maps&Census 
The Harrison Genealogy Repository http://freepages.genealogy.rootsweb.com/~harrisonrep/|
Maryland County History Timeline |
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YEAR |
MONTH |
DAY |
EVENT |
1789 |
0 |
0 |
Allegany County, Maryland was formed in 1789 from Washington County. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] |
1650 |
0 |
0 |
Anne Arundel County, Maryland formed in 1650. Original county. Formed from St. Mary's County. Name changed to Providence County in 1654. Gained part of Baltimore County in 1727. [The Handybook for Genealogists, United States of America», 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1659 |
0 |
0 |
Baltimore County, Maryland formed in 1659. Original county. Formed from Anne Arundel and Kent Counties. [The Handybook for Genealogists, United States of America», 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1851 |
0 |
0 |
Baltimore (city) was founded in 1729 and made an independent city from Baltimore County in 1851. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] |
1654 |
0 |
0 |
Patuxent County, Maryland formed in 1654. Original county. Formed from St. Mary's and (Old) Charles Counties. Extinguished in 1658 when name changed to Calvert County. ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1773 |
0 |
0 |
Caroline County, Maryland formed in 1773 from Dorchester and Queen Anne's County. Organized in 1774. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1837 |
0 |
0 |
Carroll County, Maryland formed in 1837 from Baltimore and Frederick counties. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] |
1674 |
0 |
0 |
Cecil County, Maryland formed in 1674 from Kent County. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1658 |
0 |
0 |
Charles County, Maryland formed in 1658. Original county. Formed from Potomac County. Gained territory from Prince George's County in 1748. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1668 |
0 |
0 |
Dorchester County, Maryland formed in 1668. Original county. Williams gives a 1669 formation date. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1748 |
0 |
0 |
Frederick County, Maryland formed in 1748 from Prince George's County. Gained territory from Baltimore County in 1750. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1872 |
0 |
0 |
Garrett County, Maryland formed in 1872 from Allegany County. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] |
1773 |
0 |
0 |
Harford County, Maryland formed in 1773 from Baltimore County. Organized in 1774. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1851 |
0 |
0 |
Howard County, Maryland formed in 1851 from Baltimore and Anne Arundel Counties. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] |
1642 |
0 |
0 |
Kent County, Maryland formed in 1642. Original county. Formed from St. Mary's County, east of the Chesapeake Bay. Gained territory from Cecil County in 1707, but later gave this up to Queen Anne's County. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1776 |
0 |
0 |
Montgomery County, Maryland formed from Frederick County. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1695 |
0 |
0 |
Prince George's County, Maryland formed in 1695 from Charles and Calvert Counties. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1706 |
0 |
0 |
Queen Anne's County, Maryland formed in 1706 from Talbot, Kent, and Dorchester Counties. Organized in 1707. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1637 |
0 |
0 |
St. Mary's County, Maryland formed in 1637. Original county. Included both sides of the Chesapeake Bay. Name changed to Potomac County in 1654. Name changed back to St. Mary's County in 1658. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1666 |
0 |
0 |
Somerset County, Maryland formed in 1666. Original county. Extended to the Atlantic Ocean. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1662 |
0 |
0 |
Talbot County, Maryland formed in 1662 from Kent County. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1776 |
0 |
0 |
Washington County, Maryland formed in 1776 from Frederick County. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1867 |
0 |
0 |
Wicomico County, Maryland formed in 1867 from Somerset and Worcester Counties. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] |
1742 |
0 |
0 |
Worcester County, Maryland formed in 1742 from Somerset County. [The Handybook for Genealogists, United States of America, 8th Edition, published by The Everton Publishers, Inc., Logan, Utah.] [County Courthouse Book, compiled by Elizabeth Petty Bentley, Genealogical Publishing Company, Baltimore, MD, 1990.] ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1650 |
0 |
0 |
(Old) Charles County, Maryland formed from St. Mary's County. Extinguished in 1654 when Patuxent County was formed. ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1654 |
0 |
0 |
Potomac County, Maryland renamed from St. Mary's County. ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1654 |
0 |
0 |
Providence County, Maryland renamed from Anne Arundel County. ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1658 |
0 |
0 |
Patuxent County, Maryland extinguished in 1658 when it was renamed to Calvert County. ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1658 |
0 |
0 |
Potomac County, Maryland extinguished in 1658 when name changed back to St. Mary's County. ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1669 |
0 |
0 |
Durham County, Maryland (and an unnamed county) formed from Somerset. Now part of the state of Delaware. ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1669 |
0 |
0 |
An unnamed county, along with Durham County, Maryland formed from Somerset County. Now part of the state of Delaware. ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1672 |
0 |
0 |
Worcester County, Maryland was formed from Durham County and the unnamed county. Now part of the state of Delaware. ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1685 |
0 |
0 |
A royal decision was made to divide the peninsula between the colonies of Maryland and Delaware. The boundary was not firmly established. This effectively wiped out Worcester County, Maryland, giving Durham County and the unnamed county to the colony of Delaware. ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
1658 |
0 |
0 |
Providence County, Maryland extinguished when it was renamed to Anne Arundel County. ["A Brief History of the Maryland Counties," compiled by Walt Williams (E-mail: [email protected]), Calvert County MDGenWeb Home Page (https://sites.rootsweb.com/~mdcalver/calvert.htm)]. |
Date conventions used: due to current limitations in the date field, if a county was formed in the January to March timeframe (before 1752 when the old style dates were in effect in the British colonies), the earlier year is used. And often the date given is the legislative enactment date.
MDCO is a timeline which gives the formation dates for Maryland counties and the independent city of Baltimore. This is a very useful timeline for the Maryland researchers among us!
A special thanks is given to Mr. Walt Williams, father of the Calvert County, Maryland home page under the auspices of the US GENWEB project on the Internet. (E-mail: [email protected]).
These files may be distributed via electronic media, IF AND ONLY IF, distributed free of charge.
Maps&Census The Harrison Genealogy Repository http://freepages.genealogy.rootsweb.com/~harrisonrep/
Last Updated: November 12, 1999
Becky Bonner E-Mail Address: [email protected]