Arkansas.

June 15, 1836

52, 240

1,786, 272

1,923,295

53, 104

8,875, 083
6,789, 443

58, 216
58, 560

Texas.

Dec. 29, 1845

*250,000

9,579, 677

Formed from a portion of the territory ceded to the
United States by France, under the name of "Louisi-
ana," by the treaty of Paris of 1803. Seceded May 6,
1861. Readmitted to representation upon ratifying
the fourteenth amendment, June 22, 1868.
Formed from territory ceded to the United States by
the State of Virginia.

Formed from territory ceded to the United States by
Spain by treaty of Washington of Feb. 22, 1819.
Seceded Jan. 11, 1861. Readmitted to representa-
tion upon ratifying the fourteenth amendment, June
25, 1868.

11, 196, 730 267, 339 This State was originally a part of the Republic of
Mexico, but by a successful revolt the people estab-
lished for themselves an independent republican gov-
ernment, and were subsequently annexed to the
United States. Seceded Feb. 1, 1861. Readmitted
to representation by the act of Mar. 30, 1870.
Formed from a portion of the Territory of Wisconsin,
as the "Territory of Iowa," June 12, 1838.
Formed from a portion of the territory of the State of
Michigan, as the "Territory of Wisconsin," Apr. 20,
1836.

19, 953, 134 158, 693 Formed from territory ceded to the United States by
Mexico by the Treaty of Guadalupe Hidalgo of Feb.
2, 1848.

84, 068 Formed from a portion of the territory ceded to the
United States by France by the treaty of Apr. 30,

2,825,041
4,417, 933

3,805, 069

Formed from territory ceded to the United States by
the treaty with France of Apr. 30, 1803, the treaty
with Spain of Feb. 22, 1819, and the treaty with
Great Britain of June 15, 1846.
82, 264 Formed from territory ceded to the United States by
France by the treaty of Apr. 30, 1803, and by the
State of Texas, in the settlement of her boundaries,
in 1850.

Formed from a portion of the territory of the State of
Virginia.

Formed from a portion of the territory ceded to the
United States by Mexico by the Treaty of Guadalupe
Hidalgo of Feb. 2, 1848.

1 By Public Law 204 of the 83d Cong., approved Aug. 7, 1953 (67 Stat. 407), Congress corrected an oversight of one and a half centuries and formally admitted the State of Ohio to the Union, setting Mar. 1, 1803, as the effective date of admission. Estimated.

STATES ADMITTED INTO THE UNION SINCE THE ADOPTION OF THE CONSTITUTION-Continued

square
miles

Formation

77, 047
70, 665
147, 138
68, 192

Formed from a portion of the territory ceded to the United States by France by treaty of Apr. 30, 1803.

Arizona.

Feb. 14, 1912

$216, 639

1,302, 161

1,772, 482

113,909 Formed from territory ceded to the United States by Mexico, part by the Treaty of Guadalupe Hidalgo of Feb. 2, 1848, and part by what is known as the "Gadsden Purchase," Dec. 30, 1853.

Formed from territory ceded to the United States by
Russia by treaty of Mar. 30, 1867.

Formed from the territory of the Republic of Hawaii,
annexed to the United States by act of Congress of
July 7, 1898.

District of Columbia.

763, 956

756, 510

69

Formation

Established under Art. I, sec. 8, clause 17 of Constitution. Ter-
ritory originally ceded by Maryland (legislative act of Dec. 23,
1788) and Virginia (legislative act of Dec. 3, 1789). Cessions
accepted by Congress by act of July 16, 1790; lines and bounds
established by proclamation of President Washington, Mar. 30,
1791. Virginia's cession retroceded by act of Congress July 9,
1846. The government of the District is administered by a
Commissioner (Mayor), an Assistant to the Commissioner,
and a nine-member council all of whom are appointed by the
President by and with the consent of the Senate. (Reorganiza-
tion Plan 3 of 1967, dated August 11, 1967, operative on No-
vember 3, 1967.) Pursuant to the District of Columbia Delegate
Act the District of Columbia now has a non-voting Delegate to
the House of Representatives. (Sept. 22, 1970, Pub. L. 91-405,
§§ 201-206, 84 Stat. 848.)

[973]

COMMONWEALTH OF PUERTO RICO, THE INSULAR POSSESSIONS, AND TRUST TERRITORY OF THE PACIFIC ISLANDS

Commonwealth of Puerto July 25, 1952
Rico.

2, 349, 544

2,712, 033

3, 437

Canal Zone..

Aug. 24, 1912

42, 122

44, 650

553

Acquisition

Ceded to United States by Spain by Treaty of Paris, Dec. 10,
1898. The constitution of the Commonwealth was approved
July 3, 1952.

Under the terms of the Isthmian Canal Convention of Nov.
18, 1903, the United States acquired from the Republic of
Panama a perpetual right of occupation, use, and control of
and over a zone of land 10 miles in width. For the privilege
the United States paid the Republic of Panama $10,000,000.
The United States also pays Panama $250,000 annually, dating
from Feb. 26, 1913.

Ceded to the United States by Spain by Treaty of Paris, Dec. 10,
1898.

76 Acquired by the United States Feb. 16, 1900, under terms of tripartite treaty Dec. 2, 1899. Full sovereignty accepted from native chiefs by United States Feb. 20, 1929.

133 By purchase from Denmark, Mar. 3, 1917, for $25,000,000. The Revised Organic Act of 1954 is the basis for the present territorial government.

Occupied during World War II.

Placed under the United

Nations Trusteeship system in 1947 by agreement with the
Security Council of the United Nations.

212

687

1 Final figures for Puerto Rico; all others preliminary,

Administered under jurisdiction of the Department of the Interior.

Administered under jurisdiction of the Department of the Interior except for the Saipan District, which is under Navy.

W. Va...

Wis.
Wyo..---

Total..

1 1 1 1 1 1

65 106 142 186 213 242 232 237 243 293 332 357 391 435 435 435 437 435 435

Indicates representation of new States admitted after the respective decennial census apportionments.

NOTE: The original apportionment of Representatives was established in 1787 by the Constitution. Subsequent apportionments based on the 1st Census through the 6th Census were as follows (number of census, date of act, and ratio of persons per Representative): 1st, Apr. 14, 1792, 33,000; 2d, Jan. 14, 1802, 33,000; 3d, Dec. 21, 1811, 35,000; 4th, Mar. 7, 1822, 40,000; 5th, May 22, 1832, 47,700, 6th, June 25, 1842, 70,680. Apportionment based on the 7th Census (1850) through the 12th Census (1900) was determined by the Vinton method, and for the 13th Census (1910) and 15th Census (1930) the method of major fractions was employed, there being no reapportionment in 1920. Apportionment based on the 16th Census (1940), the 17th Census (1950), and the 18th Census (1960), was determined by the method of equal proportions, a description of which may be found in S. Doc. 304, 76th Cong., 3d sess.