| State | Pre-Prohibition (prior to 1919) | Post-Prohibition (after 1933) | 1970s / 26th Amendment (adopted in 1971) | 1980s / Drinking Age Act of 1984 | 21st century |
| Alabama | Pre 1881: None 1881: 21 (none with consent of parent) | 21 | 1975: Lowered to 19 | 1986: Raised to 21 | 21 (no one underage is allowed consumption Section 28-1) |
| Alaska | N/A | 21 | 1970: Lowered to 19 | 1984: Raised to 21 with grandfather clause (if born before January 1, 1965) | 21 (unless the underage person is not on a licensed premises and the alcoholic beverage is provided by a parent, legal guardian, or spouse over the age of 21) |
| Arizona | N/A | 21 | 1972: Lowered to 19 | 1985: Raised to 21 | 21 |
| Arkansas | Pre 1925: None 1925: 21 | 21 | 21 | 21 | 21 |
| California | Pre 1891: Regulated by municipality/county (common age was 16) 1891: 18 (statewide) | 1933: 21 | 21 | 21 | 21 (except small amounts for religious ceremonies) |
| Colorado | None | (Dec) 1945: 18: for 3 % near-beer 21: for wine and liquor | 18 for 3 % beer; 21 for wine and liquor | Raised to 21 on Jul 31 1987 (with grandfather clause) | 21 |
| Connecticut | 21 | 21 | 1972: Lowered to 18 | 1982: Raised to 19 1983: Raised to 20 1985: Raised to 21 | 21 (exemptions: (1) a person over age eighteen who is an employee or permit holder under section 30-90a and who possesses alcoholic liquor in the course of such person's employment or business, (2) a minor who possesses alcoholic liquor on the order of a practicing physician, or (3) a minor who possesses alcoholic liquor while accompanied by a pare |
| Delaware | N/A | 21 | 1972: Lowered to 20 | 1984: Raised to 21 | 21 |
| District of Columbia | N/A | 18: for beer and wine 21: for liquor | 18: for beer and wine 21: for liquor | 1986: Raised to 21 with grandfather clause. | 21 |
| Florida | N/A | 21 | 1973:Lowered to 18 1980: 19 | 1986: Raised to 21 with grandfather clause | 21 |
| Georgia | N/A | 21 | 1972: Lowered to 18 | 1982: Raised to 19 1985: Raised to 20 1986: Raised to 21 | 21 |
| Hawaii | N/A | 21 | 1972: Lowered to 18 | 1986: Raised to 21 | 21 |
| Idaho | N/A | 20: for beer 21: for wine and liquor | 1972: Lowered to 19 (all) | 1987: Raised to 21 in 1987 (Apr 11) with grandfather clause | 21 |
| Illinois | 1872: Age of majority (none with written consent of parent) | pre 1961: Age of majority 1961: Raised to 21 | 1973: Lowered to 19: for beer and wine 21: for liquor | 1980: Raised to 21 | 21 |
| Indiana | N/A | Post-1934: 21 | 21 | 21 | 21 |
| Iowa | N/A | 21 | 1972: Lowered to 19 in 1972 (Jul 1) 1973: Lowered to 18 in 1973 (Jul 1) 1978: Raised to 19 in 1978 (Jul 1) | 1986: Raised to 21 in 1986 (Jul 1) with grandfather clause. | 21 |
| Kansas | N/A | 1949: 18: for beer and wine with less than 4% ABV 21: for liquor | 18: for beer and wine with less than 4% ABV 21: for beer and wine with 4% ABV or more 21: for liquor | 1985: Raised to 21 | 21 (However, anyone under 21 may consume cereal malt beverages with parental supervision on their own property) |
| Kentucky | N/A | 1938: 21 | 21 | 21 | 21 |
| Louisiana | None | 18 | 18 | 1987: Raised to 21 de jure in 1987, but de facto age was still 18 until 1995 due to a sale loophole. 1995: De facto age raised to 21 in 1995 when loophole was closed. 1996: In 1996, briefly lowered by Louisiana Supreme Court to 18 until it reversed its decision, raising to 21 three months later. Other exceptions still remain. | 21 (Exceptions to state law include): *Religious purposes; *When accompanied by a parent, spouse, or legal guardian 21 or over; *For medical purposes; *In a private residence, including up to 20 acres; *The sale, handling, transport, or service of alcoholic beverages in lawful ownership of an establishment or lawful employment of a person under 21 |
| Maine | N/A | 21 1969: Lowered to 20 | 1972: Lowered to 18 1977: Raised to 20 | 1985: Raised to 21 | 21 (however minors can drink at home with parental supervision) |
| Maryland | N/A | 21 | 1974: Lowered to 18: for beer and wine 21: for liquor | 1982: Raised to 21 with grandfather clause for those born June 30, 1964, or earlier | 21 (however anyone can drink when parents, spouses, teachers are present) |
| Massachusetts | N/A | 21 | 1973: Lowered to 18 1979: Raised to 20 in 1979 (Apr 16) | Raised to 21 in 1985 (with grandfather clause) | 21 |
| Michigan | N/A | 21 | 1972: Lowered to 18 in 1972 (Jan 1) | 1978: Raised to 19 in 1978 (Dec 3) 1978: Raised to 21 in 1978 (Dec 21), 18 days later. First state to raise age to 21 since it was lowered | 21 |
| Minnesota | N/A | 21 | 1973: Lowered to 18 (June 1) 1976: Raised to 19 (Sept 1) First state to raise age after lowering. | 1986: Raised to 21 | 21 |
| Mississippi | ? | 1966: 18: for beer and wine 21: for liquor (alcohol not legalized until 1966) | 21 | Raised to 21 in 1986 | 21 |
| Missouri | ? | 1945: 21 | 21 | 21 | 21 |
| Montana | ? | 21 | 1971: Lowered to 19 1973: Lowered to 18 1979: Raised to 19 | 1987: Raised to 21 | 21 |
| Nebraska | ? | 21 1969: Lowered to 20 | 1972: Lowered to 19 | 1980: Raised to 20 1985: Raised to 21 | 21 |
| Nevada | ? | 1933: 21 | 21 | 21 | 21 |
| New Hampshire | ? | 21 | 1973: Lowered to 18 1979: Raised to 20 | 1985: Raised to 21 | 21 |
| New Jersey | Before 1880: None Post-1880: 18 (penalties only against businesses) | 21 | 1973: Lowered to 18 | 1980: Raised to 19 1983: Raised to 21 | 21 (As of February 22, 2021, there are no longer any penalties for underage drinking besides warnings.) |
| New Mexico | ? | 1934: 21 | 21 | 21 | 21 |
| New York | 18 (16 before 1896) | Initially 21 immediately after Prohibition, then reduced to 18 four months later. | 18 | 1982: Raised to 19 in 1982 (Dec) 1985: Raised to 21 in 1985 (Dec) | 21 (Any Age with Parental Consent) |
| North Carolina | ? | 18 | 18: for beer and wine 21: for liquor | 1983: 19: for beer and wine 21: for liquor 1986: Raised to 21 in 1986 (Sep 1) | 21 |
| North Dakota | ? | 1936: 21 | 21 | 21 | 21 |
| Ohio | ? | 1933: 16 1935: 18: for 3 % ABW beer 21: for beer stronger than 3 % ABW, wine and liquor | 18: for 3 % ABW beer 21: for beer stronger than 3 % ABW, wine and liquor | 1982 (Aug. 19 to Oct. 1): 19: for 3 % ABW beer 21: for beer stronger than 3 % ABW, wine and liquor 1982 (From Oct. 1): 19: beer 21: wine and liquor 1988: 21 | 21 (However, anyone can drink with parents or legal-age spouse) |
| Oklahoma | ? | Men: 21 Women: 18: 3 % ABW beer 21: for beer stronger than 3 % ABW, wine and liquor | 1976: Lowered to 18 (for 3 % ABW beer) for both sexes in 1976 (Dec) Last state to lower the purchase age. | 1983: Raised to 21 | 21 |
| Oregon | ? | 1933: 21 | 21 | 21 | 21 |
| Pennsylvania | ? | 1935: 21 | 21 | 21 | 21 |
| Rhode Island | ? | 21 | 1970: Lowered to 18 | 1980: Raised to 19 1981: Raised to 20 1984: Raised to 21 | 21 |
| South Carolina | 21 | 1935: 18: for beer and wine 21: for liquor | 18 | 1984: 19: for beer and wine 21: for liquor 1985: Raised to 20 1986: Raised to 21 | 21 |
| South Dakota | ? | 1934: 21 (all) 1939: Lowered to 18: for 3 % beer Raised to 19: for 3 % beer | 1972: 18: for 3 % beer; 21: for wine and liquor | 1984: 19: for beer and wine 21: for liquor 1988: Raised to 21 | 21 |
| Tennessee | Pre 1881: None 1881: 21 | 21 1964: Lowered to 18 | 1979: Raised to 19 | 1984: Raised to 21 | 21 |
| Texas | Pre 1909: 21 None (with written permission of parent or guardian) Post 1909: 21 | 21 | 1973: Lowered to 18 | 1981: Raised to 19 1986: Raised to 21 in 1986 (Sep 1) | Parent consent |
| Utah | ? | 1935: 21 | 21 | 21 | 21 |
| Vermont | ? | 21 | 1971: Lowered to 18 | 1986: Raised to 21 | 21 |
| Virginia | ? | 21 | 1974: Lowered to 18: for beer and wine (21: for liquor remained) | 1981: Raised to 19 for off-premises consumption 1983: Raised to 19 (all beer) 1985: Raised to 21 | 21 |
| Washington | Age of majority since 1877 | 21 | 21 | 21 | 21 |
| West Virginia | ? | 18: for beer and wine 21: for liquor | 1972: Lowered to 18 (all) | 1983: Raised to 19 (& 21 for non-residents) 1986: Raised to 21 | 21 |