<P> As one can see in the table below, there has been much volatility in the states' drinking ages since the repeal of Prohibition in 1933 . Shortly after the ratification of the 21st amendment in December, most states set their purchase ages at 21 since that was the Voting age at the time . Most of these limits remained constant until the early 1970s . From 1969 to 1976, some 30 states lowered their purchase ages, generally to 18 . This was primarily because the voting age was lowered from 21 to 18 in 1971 with the 26th amendment . A lot of states started to lower their minimum drinking age in response, most of this occurring in 1972 or 1973 . Twelve states kept their purchase ages at 21 since repeal of Prohibition and never changed them . </P> <P> From 1976 to 1983, several states voluntarily raised their purchase ages to 19 (or, less commonly, 20 or 21), in part to combat drunk driving fatalities . In 1984, Congress passed the National Minimum Drinking Age Act, which required states to raise their ages for purchase and public possession to 21 by October 1986 or lose 10% of their federal highway funds . By mid-1988, all 50 states and the District of Columbia had raised their purchase ages to 21 (but not Puerto Rico, Guam, or the Virgin Islands, see Additional Notes below). South Dakota and Wyoming were the final two states to comply with the age 21 mandate . The current drinking age of 21 remains a point of contention among many Americans, because of it being higher than the age of majority (18 in most states) and higher than the drinking ages of most other countries . The National Minimum Drinking Age Act is also seen as a congressional sidestep of the tenth amendment . Although debates have not been highly publicized, a few states have proposed legislation to lower their drinking age, while Guam has raised its drinking age to 21 in July 2010 . </P> <Table> <Tr> <Th> State </Th> <Th> Pre-Prohibition (prior to 1919) </Th> <Th> Post-Prohibition (after 1933) </Th> <Th> 1970s / 26th Amendment (adopted in 1971) </Th> <Th> 1980s / Drinking Age Act of 1984 </Th> <Th> 21st century </Th> </Tr> <Tr> <Th> Alabama </Th> <Td> Pre 1881: None 1881: 21 (none with consent of parent) </Td> <Td> 21 </Td> <Td> 1975: Lowered to 19 </Td> <Td> 1986: Raised to 21 </Td> <Td> 21 (no one underage is allowed consumption Section 28 - 1) </Td> </Tr> <Tr> <Th> Alaska </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1970: Lowered to 19 </Td> <Td> 1984: Raised to 21 with grandfather clause (if born before January 1, 1965) </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Arizona </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1972: Lowered to 19 </Td> <Td> 1985: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Arkansas </Th> <Td> Pre 1925: None 1925: 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> California </Th> <Td> Pre 1891: Regulated by municipality / county (common age was 16) 1891: 18 (statewide) </Td> <Td> 1933: 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 (except small amounts for religious ceremonies) </Td> </Tr> <Tr> <Th> Colorado </Th> <Td> None </Td> <Td> 1945: 18: for beer 21: for wine and liquor </Td> <Td> 18 </Td> <Td> Raised to 21 in 1987 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Connecticut </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1972: Lowered to 18 </Td> <Td> 1982: Raised to 19 1983: Raised to 20 1985: Raised to 21 </Td> <Td> 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 parent, guardian or spouse of the minor, who has attained the age of twenty - one . Nothing in this subsection shall be construed to burden a person's exercise of religion under section 3 of article first of the Constitution of the state in violation of subsection (a) of section 52 - 571b . </Td> </Tr> <Tr> <Th> Delaware </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1972: Lowered to 20 </Td> <Td> 1984: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> District of Columbia </Th> <Td>? </Td> <Td> 18: for beer and wine 21: for liquor </Td> <Td> 18: for beer and wine 21: for liquor </Td> <Td> 1986: Raised to 21 with grandfather clause . </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Florida </Th> <Td>? </Td> <Td> 18 </Td> <Td> 1980: 19 </Td> <Td> 1985: Raised to 21 with grandfather clause </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Georgia </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1972: Lowered to 18 </Td> <Td> 1984: Raised to 19 1985: Raised to 20 1986: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Hawaii </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1972: Lowered to 18 </Td> <Td> 1986: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Idaho </Th> <Td>? </Td> <Td> 20: for beer 21: for wine and liquor </Td> <Td> 1972: Lowered to 19 (all) </Td> <Td> 1987: Raised to 21 in 1987 (Apr 11) with grandfather clause </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Illinois </Th> <Td> 1872: Age of majority (none with written consent of parent) </Td> <Td> pre 1961: Age of majority 1961: Raised to 21 </Td> <Td> 1973: Lowered to 19: for beer and wine 21: for liquor </Td> <Td> 1980: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Indiana </Th> <Td>? </Td> <Td> Post-1934: 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Iowa </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1972: Lowered to 19 in 1972 (Jul 1) 1973: Lowered to 18 in 1973 (Jul 1) 1978: Raised to 19 in 1978 (Jul 1) </Td> <Td> 1986: Raised to 21 in 1986 (Jul 1) with grandfather clause . </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Kansas </Th> <Td>? </Td> <Td> 1949: 18: for beer and wine with less than 4% ABV 21: for liquor </Td> <Td> 18: for beer and wine with less than 4% ABV 21: for beer and wine with 4% ABV or more 21: for liquor </Td> <Td> 1985: Raised to 21 </Td> <Td> 21 (However, anyone under 21 may consume cereal malt beverages with parental supervision on their own property) </Td> </Tr> <Tr> <Th> Kentucky </Th> <Td>? </Td> <Td> 1938: 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Louisiana </Th> <Td>? </Td> <Td> As of 1948: 18 </Td> <Td> 18 </Td> <Td> 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 . </Td> <Td> 21 (Exceptions to state law include: <P> For an established religious purpose; When a person under twenty - one years of age is accompanied by a parent, spouse, or legal guardian twenty - one years of age or older; For medical purposes when purchased as an over the counter medication, or when prescribed or administered by a licensed physician, pharmacist, dentist, nurse, hospital, or medical institution; In a private residence, which shall include a residential dwelling and up to twenty contiguous acres, on which the dwelling is located, owned by the same person who owns the dwelling; The sale, handling, transport, or service in dispensing of any alcoholic beverage pursuant to lawful ownership of an establishment or to lawful employment of a person under twenty - one years of age by a duly licensed manufacturer, wholesaler, or retailer of beverage alcohol .) </P> </Td> </Tr> <Tr> <Th> Maine </Th> <Td>? </Td> <Td> 21 1969: Lowered to 20 </Td> <Td> 1972: Lowered to 18 1977: Raised to 20 </Td> <Td> 1985: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Maryland </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1974: Lowered to 18: for beer and wine 21: for liquor </Td> <Td> 1982: Raised to 21 with grandfather clause </Td> <Td> 21 (however anyone can drink when parents, spouses, teachers are present) </Td> </Tr> <Tr> <Th> Massachusetts </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1973: Lowered to 18 1979: Raised to 20 in 1979 (Apr 16) </Td> <Td> Raised to 21 in 1985 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Michigan </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1972: Lowered to 18 in 1972 (Jan 1) </Td> <Td> 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 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Minnesota </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1973: Lowered to 18 (June 1) 1976: Raised to 19 (Sept 1) First state to raise age after lowering . </Td> <Td> 1986: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Mississippi </Th> <Td>? </Td> <Td> 1966: 18: for beer and wine 21: for liquor (alcohol not legalized until 1966) </Td> <Td> 18 </Td> <Td> Raised to 21 in 1986 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Missouri </Th> <Td>? </Td> <Td> 1945: 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Montana </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1971: Lowered to 19 1973: Lowered to 18 1979: Raised to 19 </Td> <Td> 1987: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Nebraska </Th> <Td>? </Td> <Td> 21 1969: Lowered to 20 </Td> <Td> 1972: Lowered to 19 </Td> <Td> 1980: Raised to 20 1985: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Nevada </Th> <Td>? </Td> <Td> 1933: 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> New Hampshire </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1973: Lowered to 18 1979: Raised to 20 </Td> <Td> 1985: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> New Jersey </Th> <Td> Before 1880: None Post-1880: 18 (penalties only against businesses) </Td> <Td> 21 </Td> <Td> 1973: Lowered to 18 </Td> <Td> 1980: Raised to 19 1983: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> New Mexico </Th> <Td>? </Td> <Td> 1934: 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> New York </Th> <Td> 21 </Td> <Td> 18 </Td> <Td> 18 </Td> <Td> 1982: Raised to 19 in 1982 (Dec) 1985: Raised to 21 in 1985 (Dec) </Td> <Td> 21 </Td> </Tr> <Tr> <Th> North Carolina </Th> <Td>? </Td> <Td> 18 </Td> <Td> 18: for beer and wine 21: for liquor </Td> <Td> 1983: 19: for beer and wine 21: for liquor 1986: Raised to 21 in 1986 (Sep 1) </Td> <Td> 21 </Td> </Tr> <Tr> <Th> North Dakota </Th> <Td>? </Td> <Td> 1936: 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Ohio </Th> <Td>? </Td> <Td> 1935: 18: for 3.2% ABW beer 21: for beer stronger than 3.2% ABW, wine and liquor </Td> <Td> 18: for 3.2% ABW beer 21: for beer stronger than 3.2% ABW, wine and liquor </Td> <Td> 1982: 19: for 3.2% ABW beer 21: for beer stronger than 3.2% ABW, wine and liquor 1982: 19: beer 21: wine and liquor 1988: 21 </Td> <Td> 21 (However, anyone can drink with parents or legal - age spouse) </Td> </Tr> <Tr> <Th> Oklahoma </Th> <Td>? </Td> <Td> Men: 21 Women: 18: 3.2% ABW beer 21: for beer stronger than 3.2% ABW, wine and liquor </Td> <Td> 1976: Lowered to 18 (for 3.2% ABW beer) for both sexes in 1976 (Dec) Last state to lower the drinking age . </Td> <Td> 1983: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Oregon </Th> <Td>? </Td> <Td> 1933: 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Pennsylvania </Th> <Td>? </Td> <Td> 1935: 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Rhode Island </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1970: Lowered to 18 </Td> <Td> 1980: Raised to 19 1981: Raised to 20 1984: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> South Carolina </Th> <Td> 21 </Td> <Td> 1935: 18: for beer and wine 21: for liquor </Td> <Td> 18: for beer and wine 21: for liquor </Td> <Td> 1984: 19: for beer and wine 21: for liquor 1986: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> South Dakota </Th> <Td>? </Td> <Td> 1934: 21 (all) 1939: Lowered to 18: for 3.2% beer Raised to 19: for 3.2% beer </Td> <Td> 1972: 18: for beer and wine 21: for liquor </Td> <Td> 1984: 19: for beer and wine 21: for liquor 1988: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Tennessee </Th> <Td> Pre 1881: None 1881: 21 </Td> <Td> 21 1964: Lowered to 18 </Td> <Td> 1979: Raised to 19 </Td> <Td> 1984: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Texas </Th> <Td> Pre 1909: 21 None (with written permission of parent or guardian) Post 1909: 21 </Td> <Td> 21 </Td> <Td> 1973: Lowered to 18 </Td> <Td> 1981: Raised to 19 1986: Raised to 21 in 1986 (Sep 1) </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Utah </Th> <Td>? </Td> <Td> 1935: 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Vermont </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1971: Lowered to 18 </Td> <Td> 1986: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Virginia </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1974: Lowered to 18: for beer and wine (21: for liquor remained) </Td> <Td> 1981: Raised to 19 for off - premises consumption 1983: Raised to 19 (all beer) 1985: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Washington </Th> <Td> "Age of majority" since 1877 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> West Virginia </Th> <Td>? </Td> <Td> 18: for beer and wine 21: for liquor </Td> <Td> 1972: Lowered to 18 (all) </Td> <Td> 1983: Raised to 19 (& 21 for non-residents) 1986: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Wisconsin </Th> <Td> 1839--1866: 18: for wine and liquor None: for beer Post-1866: 21 (all) </Td> <Td> 18: for beer 21: for wine and spirits 1957: 21: for residents of bordering states with age limit 21 . 1963: Raised to 21 (off - premises beer sales, remained 18 for on - premises). </Td> <Td> 1972: Lowered to 18 (all) in 1972 (Mar) 1977: Border state restriction lifted . </Td> <Td> 1984: Raised to 19 1986: Raised to 21 (September 1, 1986) </Td> <Td> 21 (however anyone can drink when parents, spouses, teachers are present) </Td> </Tr> <Tr> <Th> Wyoming </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1973: Lowered to 19 </Td> <Td> 1988: Raised to 21 in 1988 (Jul 1) Last state to raise de jure drinking age to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> American Samoa </Th> <Td>? </Td> <Td>? </Td> <Td>? </Td> <Td> 21? </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Northern Mariana Islands </Th> <Td>--</Td> <Td>--</Td> <Td>? </Td> <Td> 21? </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Puerto Rico </Th> <Td>? </Td> <Td> 18 </Td> <Td> 18 </Td> <Td> Kept at 18 despite 10% highway funding penalty under Drinking Age Act . </Td> <Td> 18 </Td> </Tr> <Tr> <Th> Virgin Islands </Th> <Td>? </Td> <Td>? </Td> <Td>? </Td> <Td> 18 </Td> <Td> 18 </Td> </Tr> <Tr> <Th> Guam </Th> <Td>? </Td> <Td> 21? </Td> <Td> 18 </Td> <Td> 18 </Td> <Td> Raised to 21 in 2010 </Td> </Tr> </Table> <Tr> <Th> State </Th> <Th> Pre-Prohibition (prior to 1919) </Th> <Th> Post-Prohibition (after 1933) </Th> <Th> 1970s / 26th Amendment (adopted in 1971) </Th> <Th> 1980s / Drinking Age Act of 1984 </Th> <Th> 21st century </Th> </Tr>

What's the legal drinking age in montana