A municipal charter is the legal document that defines the organization, powers, functions, and essential procedures of the city government. The charter also details the form of municipal government, of which there are historically five forms: council-manager, mayor-council, commission, town meeting and representative town meeting.
Characteristics include:
This is the most common form of government. According to surveys by the International City/County Management Association (ICMA), this form of government has grown from 48% usage in 1996 to 55% usage in 2006. It is most popular in cities with populations over 10,000, mainly in the Southeast and Pacific coast areas. Some examples are Phoenix, Arizona; Topeka, Kansas; Salt Lake City, Utah and Rockville, Maryland.
Characteristics include:
Occuring in 34% of cities surveyed by International City/County Management Association (ICMA), this is the second most common form of government. It is found mostly in older, larger cities, or in very small cities, and is most popular in the Mid-Atlantic and Midwest. Cities with variations in the mayor-council form of government are New York, New York; Houston, Texas; and Minneapolis, Minnesota.
Characteristics include:
The commission form of city government is the oldest form of government in the U.S., but exists today in less than 1% of cities. It typically occurs in cities with populations below 100,000, such as Sunrise, Florida and Fairview, Tennessee.
Characteristics include:
Although the town meeting form of government is generally viewed as the purest form of democracy, because it allows all eligible voters a voice in local policy decisions, it is practiced in only 5% of municipalities.
Town meeting government is found in Marblehead, Massachusetts.
Characteristics include:
This form of government is found in fewer than 1% of cities, almost exclusively in small, New England municipalities, such as Bowdoin, Maine and Lexington, Massachusetts.
Recent examinations of government structure indicate that these forms of government are less distinct that they once were. This is due, in part, to the common practice of incorporating structural features from other forms into one's current form. This mixing is also attributed to local responses to socioeconomic, demographic, and political changes. The most common mixing occurs across the two most prevalent forms, mayor-council and the council-manager. Among all cities proposing a change to their structure of government, the most common proposal was to add the position of chief administration officer/city manager. This professionalization of government administration also had the highest percentage of voter approval. Among other proposed changes, 50% or more respondents of ICMA's 2006 survey reported voter approval to increase or decrease the number of council members, to modify the method of electing the mayor and to decrease the power or authority of the mayor.
Listed below is the form of government for the thirty most populous cities in the United States, based on the 2010 U.S. Census figures. The forms of government are informed by the member database at the National League of Cities.
| Rank | City Name | State | Form Of Government |
| 1 | New York | NY | Mayor-Council |
| 2 | Los Angeles | CA | Mayor-Council |
| 3 | Chicago | IL | Mayor-Council |
| 4 | Houston | TX | Mayor-Council |
| 5 | Philadelphia | PA | Mayor-Council |
| 6 | Phoenix | AZ | Council-Manager |
| 7 | San Antonio | TX | Council-Manager |
| 8 | San Diego | CA | Mayor-Council |
| 9 | Dallas | TX | Council-Manager |
| 10 | San Jose | CA | Council-Manager |
| 11 | Indianapolis | IN | Mayor-Council |
| 12 | Jacksonville | FL | Mayor-Council |
| 13 | San Francisco | CA | Mayor-Council |
| 14 | Austin | TX | Council-Manager |
| 15 | Columbus | OH | Mayor-Council |
| 16 | Fort Worth | TX | Council-Manager |
| 17 | Louisville-Jefferson County | KY | Mayor-Council |
| 18 | Charlotte | NC | Council-Manager |
| 19 | Detroit | MI | Mayor-Council |
| 20 | El Paso | TX | Council-Manager |
| 21 | Memphis | TN | Mayor-Council |
| 22 | Nashville-Davidson | TN | Mayor-Council |
| 23 | Baltimore | MD | Mayor-Council |
| 24 | Boston | MA | Mayor-Council |
| 25 | Seattle | WA | Mayor-Council |
| 26 | Washington | DC | Mayor-Council |
| 27 | Denver | CO | Mayor-Council |
| 28 | Milwaukee | WI | Mayor-Council |
| 29 | Portland | OR | Commission |
| 30 | Las Vegas | NV | Council-Manager |
Barnes, William R. "Forms and Structure of Municipal Government in the United States." Presentation to the Convention of Scottish Local Authorities, Edinburgh, Scotland, October 24, 1991.
DeSantis,Victor S. and Tari Renner. "City Government Structures: an Attempt at Classification." State and Local Government Review, 34(2) (Spring 2002).
Frederickson, H. George, Curtis Wood, and Brett Logan. "How American City Governments Have Changed: The Evolution of the Model City Charter" National Civic Review 90(1) (2001).
Frederickson, H. George, and Gary Alan Johnson. "The Adapted American City: A Study in Institutional Dynamics." Urban Affairs Review36(6) (July 2001).
Krane, Dale, Platon Rigos, & Melvin B. Hill, Jr. Home Rule in America: A Fifty-State Handbook. Washington, D.C.: CQ Press, 2001.
Moulder, Evelina. "Municipal Form of Government: Trends in Structure, Responsibility, and Composition." In The Municipal Year Book 2008. Washington, D.C.: International City/County Management Association, 2008.
National League of Cities. Choices of the Citizenry: Forms of Municipal Government. Washington, DC: National League of Cities, May 1989.
Svara, James H. "The Shifting Boundary Between Elected Officials and City Managers in Large Council-Manager Cities" Public Administration Review 59(1) (January-February 1999).
Svara, James H. Two Decades of Continuity and Change in American City Councils. Washignton, D.C.: National League of Cities, September 2003.