Connecticut Map & Atlas Guide

Any Historical Connecticut Map can indicate who owned specific property in the state and which towns held the county seat at the time.  This information is a valuable starting point for your research pointing you to the right location of records.

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Solving Research Problems with a Connecticut Maps – If you have started your family research, you might have experienced trouble with trying to identify Connecticut city borders and names that have changed over the course of time. This can make it difficult to understand where your ancestors’ information is kept.

Because Connecticut historic maps were usually commissioned by the county seat, they often display information about the county, including town names. Reading a Connecticut map from the time period you are researching can help tremendously in solving these problems by leading you to the correct town records. It can also give you other leads, such as the location of city directories or old post offices in Connecticut.

Connecticut Map of Counties

Connecticut Map of Counties

Choosing the Best Connecticut Map – If you have a large source of maps to choose from, try starting with the area where your ancestors resided and looking for the maps with the most detail.

You can determine a lot by seeing if the area was still rural or more developed, and how far it was to the nearest city.  This can shed light on your family’s lifestyle and occupation.

Were they farmers who lived in the country, or merchants who traveled often to a nearby city?  A map can give you an idea of what occupations were possible.

Bound in folio-sized books by county, many Connecticut libraries, in addition to the Connecticut State Library, have these excellent Map resources.

Connecticut Map of County Formations For The Years 1687-1960

These Connecticut maps shows the historical changes to Connecticut counties from 1687 to 1960.

Slideshow image
Connecticut County Formation years
1643 1644 1652 1658 1662 1663 1664 1665 1666 1669 1670 1671 1674 1675 1683
1687 1689 1690 1694 1697 1699 1700 1706 1708 1709 1712 1714 1717 1722 1726
1728 1730 1738 1749 1751 1774 1776 1780 1782 1783 1785 1786 1788 1789 1796
1798 1799 1803 1804 1806 1807 1824 1827 1881 1885 1960        
Connecticut Census Year with Modern Map overlayed:
1790 1800 1810-1820 1830-1880 1890-1930              
Connecticut Map Abbreviations
unorg. = unorganized
g. = gained
w. = with
fr. = from
atmt. = attachment
exch = exchanged
nca.= non county area
ch. = changed
Fa  - Fairfield
Har - Hartford
Lit - Litchfield
Mi  - Middlesex
NH  - New Haven
NL  - New London
To  - Tolland
Wi  - Windham
Pr  - Providence
Wa  - Washington
Br  - Bristol
Knt - Kent
Ne  - Newport

Ba  - Barnstable
Be  - Berkshire
Br  - Bristol
Du  - Dukes
Es  - Essex
Fr  - Franklin
Hdn - Hampden
Hsr - Hampshire
Mi  - Middlesex
Nan - Nantucket
No  - Norfolk
Pl  - Plymouth
Su  - Suffolk
Wo  - Worcester

Connecticut Maps & Atlases

1836 Connecticut MapThe David Rumsey Historical Connecticut Map Collection is scanned from original copies so you can see Connecticut as our ancestors saw them over a hundred years ago.

Some Connecticut map years (not all) have cities, railroads, P.O. locations, township outlines and other features useful to the Connecticut researcher.

External Links for Connecticut Maps

U.S. State Map Guides