Checklist taken from Fire Insurance Maps in the Library of Congress: Plans of North American Cities and Towns Produced by the Sanborn Map Company: A Checklist by Library of Congress (1981).
* is the date of the most recent pasted corrections to an original map set (generally the first date provided).
| City | County | Dates |
|---|---|---|
| Bellefonte | New Castle | July 1936 |
| Bellefonte | New Castle | July 1936-Oct. 1944* |
| Bridgeville | Sussex | Jan. 1912 |
| Bridgeville | Sussex | Aug. 1923 |
| Bridgeville | Sussex | Aug. 1923-Nov. 1942* |
| Camden | Kent | Aug. 1897 |
| Camden | Kent | Sept. 1904 |
| Camden | Kent | Mar. 1910 |
| Camden | Kent | July 1919 |
| Camden | Kent | Aug. 1929 |
| Camden | Kent | Aug. 1929-Apr. 1938* |
| Claymont | New Castle | Aug. 1927 |
| Clayton | Kent | Sept. 1897 |
| Clayton | Kent | Sept. 1904 |
| Clayton | Kent | Feb. 1910 |
| Clayton | Kent | July 1923 |
| Clayton | Kent | July 1923-Aug. 1940* |
| Delaware City | New Castle | Mar. 1885 |
| Delaware City | New Castle | Sept. 1891 |
| Delaware City | New Castle | Aug. 1904 |
| Delaware City | New Castle | Jan. 1910 |
| Delaware City | New Castle | Aug. 1923 |
| Delaware City | New Castle | Aug. 1923* |
| Delmar | Sussex | Dec. 1904 |
| Delmar | Sussex | Jan. 1911 |
| Delmar | Sussex | July 1923 |
| Delmar | Sussex | Jan. 1931 |
| Delmar | Sussex | Jan. 1931-Aug. 1939* |
| Dover | Kent | Apr. 1885 |
| Dover | Kent | Aug. 1891 |
| Dover | Kent | Aug. 1897 |
| Dover | Kent | Sept. 1904 |
| Dover | Kent | Mar. 1910 |
| Dover | Kent | June 1919 |
| Dover | Kent | Aug. 1929 |
| Dover | Kent | Aug. 1929-June 1950* |
| Felton | Kent | Sept. 1919 |
| Felton | Kent | Sept. 1919* |
| Frederica | Kent | May 1885 |
| Frederica | Kent | July 1891 |
| Frederica | Kent | Aug. 1897 |
| Frederica | Kent | Sept. 1904 |
| Frederica | Kent | May 1910 |
| Frederica | Kent | July 1919 |
| Frederica | Kent | July 1919* |
| Georgetown | Sussex | May 1885 |
| Georgetown | Sussex | July 1891 |
| Georgetown | Sussex | July 1897 |
| Georgetown | Sussex | Oct. 1904 |
| Georgetown | Sussex | June 1910 |
| Georgetown | Sussex | Oct. 1919 |
| Georgetown | Sussex | Apr. 1930 |
| Georgetown | Sussex | Apr. 1930-Sept. 1939* |
| Greenwood | Sussex | Sept. 1929 |
| Greenwood | Sussex | Sept. 1929* |
| Harrington | Kent | May 1885 |
| Harrington | Kent | June 1891 |
| Harrington | Kent | Sept. 1897 |
| Harrington | Kent | Sept. 1904 |
| Harrington | Kent | Apr. 1910 |
| Harrington | Kent | Aug. 1919 |
| Harrington | Kent | Aug. 1931 |
| Harrington | Kent | Aug. 1931-Aug. 1940* |
| Laurel | Sussex | May 1885 |
| Laurel | Sussex | June 1891 |
| Laurel | Sussex | July 1897 |
| Laurel | Sussex | June 1901 |
| Laurel | Sussex | June 1907 |
| Laurel | Sussex | Oct. 1912 |
| Laurel | Sussex | Oct. 1922 |
| Laurel | Sussex | July 1931 |
| Laurel | Sussex | July 1931-Sept. 1945* |
| Lewes | Sussex | June 1891 |
| Lewes | Sussex | July 1897 |
| Lewes | Sussex | Oct. 1904 |
| Lewes | Sussex | July 1910 |
| Lewes | Sussex | Oct. 1922 |
| Lewes | Sussex | Jan. 1931 |
| Lewes | Sussex | Jan. 1931-Oct. 1945 |
| Middletown | New Castle | Aug. 1884 |
| Middletown | New Castle | Sept. 1891 |
| Middletown | New Castle | Sept. 1904 |
| Middletown | New Castle | Feb. 1910 |
| Middletown | New Castle | Mar. 1922 |
| Middletown | New Castle | Mar. 1932 |
| Middletown | New Castle | Mar. 1932-Aug. 1942* |
| Milford | Kent/Sussex | May 1885 |
| Milford | Kent/Sussex | July 1891 |
| Milford | Kent/Sussex | July 1897 |
| Milford | Kent/Sussex | Sept. 1904 |
| Milford | Kent/Sussex | May 1910 |
| Milford | Kent/Sussex | Nov. 1919 |
| Milford | Kent/Sussex | Feb. 1930 |
| Milford | Kent/Sussex | Feb. 1930-Oct. 1943* |
| Millsboro | Sussex | Sept. 1929 |
| Millsboro | Sussex | Sept. 1929* |
| Milton | Sussex | July 1911 |
| Milton | Sussex | July 1923 |
| Milton | Sussex | July 1923-Aug. 1937* |
| New Castle | New Castle | Mar. 1885 |
| New Castle | New Castle | Sept. 1891 |
| New Castle | New Castle | July 1901 |
| New Castle | New Castle | Oct. 1907 |
| New Castle | New Castle | July 1912 |
| New Castle | New Castle | Aug. 1923 |
| New Castle | New Castle | Aug. 1923-Aug. 1943* |
| Newark | New Castle | Sept. 1891 |
| Newark | New Castle | June 1907 |
| Newark | New Castle | May 1915 |
| Newark | New Castle | Sept. 1922 |
| Newark | New Castle | July 1929 |
| Newark | New Castle | July 1929-July 1949* |
| Newport | New Castle | June 1921 |
| Newport | New Castle | Sept. 1927 |
| Newport | New Castle | Sept. 1937 |
| Newport | New Castle | Sept. 1937-Nov. 1942* |
| Newport | New Castle | New and additional sheets |
| Seaford | Sussex | May 1885 |
| Seaford | Sussex | May 1891 |
| Seaford | Sussex | July 1897 |
| Seaford | Sussex | Dec. 1904 |
| Seaford | Sussex | Dec. 1910 |
| Seaford | Sussex | July 1923 |
| Seaford | Sussex | Jan. 1931 |
| Seaford | Sussex | Jan. 1931-Aug. 1948* |
| Selbyville | Sussex | Feb. 1932 |
| Selbyville | Sussex | Feb. 1932* |
| Selbyville | Sussex | Mar. 1958 |
| Smyrna | Kent | Apr. 1885 |
| Smyrna | Kent | Aug. 1891 |
| Smyrna | Kent | Oct. 1908 |
| Smyrna | Kent | Aug. 1915 |
| Smyrna | Kent | Aug. 1923 |
| Smyrna | Kent | Aug. 1930 |
| Smyrna | Kent | Aug. 1930-Aug. 1940* |
| Wilmington | New Castle | 1884 |
| Wilmington | New Castle | 1901 |
| Wilmington | New Castle | 1927 |
| Wilmington | New Castle | 1927-Feb. 1951* |
| Wilmington | New Castle | New and additional sheets |