| Season | Division | Played | Won | Drawn | Lost | For | Against | Points | Position | Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| 1949-50 | Welsh League South Division Two West | 38 | 13 | 14 | 11 | 69 | 86 | 37 | 11 (20) | Played as Betws FC |
| 1950-51 | Welsh League South Division Two West | 38 | 16 | 9 | 13 | 76 | 65 | 41 | 7 (20) | Played as Betws FC |
| 1951-1952 | Welsh League South Division Two West | 32 | 10 | 5 | 17 | 72 | 105 | 25 | 13 (20) | Played as Betws FC |
| 1952-53 | Welsh League South Division Two West | 32 | 15 | 6 | 11 | 90 | 78 | 36 | 6 (17) | Played as Betws FC |
| 1953-54 | Welsh League South Division Two West | 36 | 18 | 5 | 13 | 89 | 73 | 41 | 6 (19) | Played as Betws FC |
| 1954-55 | Welsh League South Division Two West | 38 | 17 | 4 | 17 | 95 | 99 | 38 | 6 (20) | Played as Betws FC |
| 1955-56 | Welsh League South Division Two West | 32 | 5 | 7 | 20 | 61 | 106 | 17 | 15 (17) | Played as Betws FC |
| 1956-57 | Welsh League South Division Two West | 32 | 14 | 6 | 12 | 72 | 54 | 34 | 9 (17) | Played as Betws FC |
| 1957-58 | Welsh League South Division Two West | 38 | 27 | 7 | 4 | 130 | 56 | 61 | 2 (20) | Played as Betws FC |
| 1958-59 | Welsh League South Division Two West | 38 | 27 | 4 | 5 | 144 | 60 | 58 | 1 (19) | Played as Betws FC Promoted to WLS1 |
| 1959-60 | Welsh League South Division One | 38 | 12 | 7 | 19 | 73 | 111 | 31 | 16 (20) | Played as Betws FC |
| 1960-61 | Welsh League South Division One | 38 | 6 | 4 | 28 | 56 | 113 | 16 | 19 (20) | Changed name to Ammanford Town Relegated to WLS D2W |
| 1961-62 | Welsh League South Division Two West | 30 | 19 | 3 | 8 | 92 | 49 | 41 | 5 (16) | |
| 1962-63 | Welsh League South Division Two West | 30 | 14 | 2 | 14 | 99 | 84 | 30 | 6 (16) | |
| 1963-64 | Welsh League South Division Two West | 26 | 8 | 4 | 14 | 51 | 63 | 20 | 9 (14) | |
| 1964-65 | Welsh League South Division Two West | 30 | 23 | 3 | 4 | 92 | 35 | 49 | 2 (16) | Promoted to WLS Division One - as Runners Up to Chepstow Town |
| 1965-66 | Welsh League South Division One | 30 | 24 | 5 | 1 | 85 | 32 | 53 | 1 (16) | Promoted to WLS Premier Division - as Champions of Division One |
| 1966-67 | Welsh League South Premier Division | 30 | 17 | 6 | 7 | 70 | 44 | 40 | 2 (16) | Runners up to Cardiff Reserves |
| 1967-68 | Welsh League South Premier Division | 34 | 25 | 5 | 4 | 85 | 37 | 55 | 2 (18) | Runners u to Cardiff Reserves |
| 1968-69 | Welsh League South Premier Division | 34 | 12 | 9 | 13 | 64 | 49 | 33 | 11 (18) | |
| 1969-70 | Welsh League South Premier Division | 34 | 5 | 9 | 10 | 62 | 47 | 39 | 8 (13) | |
| 1970-71 | Welsh League South Premier Division South | 34 | 14 | 6 | 14 | 52 | 45 | 34 | 9 (18) | |
| 1971-72 | Welsh League South Premier Division | 34 | 13 | 7 | 14 | 57 | 59 | 33 | 10 (18) | |
| 1972-73 | Welsh League South Premier Division | 34 | 14 | 6 | 14 | 53 | 55 | 34 | 9 (18) | |
| 1973-74 | Welsh League South Premier Division | 34 | 14 | 11 | 9 | 54 | 47 | 39 | 8 (18) | |
| 1974-75 | Welsh League South Premier Division | 34 | 11 | 10 | 13 | 63 | 71 | 32 | 10 (18) | |
| 1975-76 | Welsh League South Premier Division | 34 | 15 | 12 | 7 | 65 | 40 | 42 | 5 (18) | |
| 1976-77 | Welsh League South Premier Division | 34 | 11 | 7 | 16 | 49 | 59 | 29 | 13 (18) | |
| 1977-78 | Welsh League South Premier Division | 34 | 15 | 10 | 9 | 69 | 49 | 40 | 5 (18) | |
| 1978-79 | Welsh League South Premier Division | 34 | 14 | 11 | 9 | 47 | 42 | 39 | 7 (18) | |
| 1979-80 | Welsh League South Premier Division | 34 | 11 | 13 | 10 | 50 | 54 | 35 | 7 (18) | |
| 1980-81 | Welsh League South Premier Division | 34 | 11 | 8 | 15 | 49 | 54 | 30 | 13 (18) | |
| 1981-82 | Welsh League South Premier Division | 34 | 16 | 5 | 13 | 38 | 39 | 53 | 7 (18) | |
| 1982-83 | Welsh League South Premier Division | 34 | 6 | 7 | 21 | 37 | 71 | 25 | 18 (18) | Relegated to Welsh Premier Division - National Division is created |
| 1983-84 | Welsh League South Premier Division | 36 | 13 | 6 | 17 | 48 | 63 | 45 | 12 (19) | |
| 1984-85 | Welsh League South Premier Division | 34 | 11 | 9 | 14 | 46 | 46 | 42 | 9 (18) | |
| 1985-86 | Welsh League South Premier Division | 34 | 12 | 9 | 13 | 44 | 54 | 45 | 9 (18) | |
| 1986-87 | Welsh League South Premier Division | 34 | 16 | 9 | 9 | 54 | 35 | 57 | 6 (18) | |
| 1987-88 | Welsh League South Premier Division | 34 | 12 | 8 | 14 | 33 | 49 | 44 | 10 (18) | Changed name to Ammanford |
| 1988-89 | Welsh League South Premier Division | 34 | 22 | 7 | 5 | 72 | 36 | 73 | 3 (18) | Promoted to Welsh National Division |
| 1989-90 | Welsh National Division | 30 | 7 | 6 | 17 | 32 | 54 | 27 | 14 (16) | |
| 1990-91 | Welsh National Division | 30 | 2 | 6 | 22 | 20 | 86 | 12 | 16 (16) | Relegated to Welsh League Division One |
| 1991-92 | Welsh League Division One | 32 | 16 | 9 | 7 | 55 | 35 | 57 | 3 (17) | Missed Runner Up spot by 1 goal Promoted due to re-shuffle Welsh Premier League is created |
| 1992-93 | Welsh League Division One | 26 | 11 | 7 | 8 | 38 | 44 | 40 | 6 (14) | |
| 1993-94 | Welsh League Division One | 34 | 13 | 6 | 15 | 52 | 55 | 45 | 9 (18) | |
| 1994-95 | Welsh League Division One | 36 | 12 | 8 | 16 | 43 | 52 | 44 | 15 (19) | |
| 1995-96 | Welsh League Division One | 34 | 6 | 5 | 23 | 43 | 105 | 23 | 17 (18) | Relegated to Welsh League Division Two |
| 1996-67 | Welsh League Division Two | 30 | 7 | 6 | 17 | 45 | 82 | 27 | 12 (16) | |
| 1997-98 | Welsh League Division Two | 30 | 13 | 5 | 12 | 45 | 58 | 44 | 8 (16) | |
| 1998-99 | Welsh League Division Two | 30 | 18 | 5 | 7 | 71 | 30 | 59 | 3 (16) | Promoted to Welsh League Division One |
| 1999-2000 | Welsh League Division One | 34 | 10 | 6 | 18 | 41 | 54 | 36 | 16 (18) | |
| 2000-01 | Welsh League Division One | 34 | 11 | 8 | 15 | 45 | 56 | 41 | 9 (18) | |
| 2001-02 | Welsh League Division One | 36 | 8 | 5 | 23 | 40 | 85 | 29 | 18 (19) | Relegated to Welsh League Division Two |
| 2002-03 | Welsh League Division Two | 34 | 14 | 5 | 15 | 65 | 63 | 47 | 10 (18) | |
| 2003-04 | Welsh League Division Two | 32 | 10 | 7 | 15 | 52 | 66 | 37 | 10 (17) | |
| 2004-05 | Welsh League Division Two | 34 | 8 | 8 | 18 | 46 | 65 | 32 | 16 (18) | Stayed up due to merger of Neath & Skewen |
| 2005-06 | Welsh League Division Two | 34 | 10 | 7 | 17 | 44 | 61 | 37 | 12 (18) | |
| 2006-07 | Welsh League Division Two | 34 | 15 | 9 | 10 | 63 | 63 | 54 | 6 (18) | |
| 2007-08 | Welsh League Division Two | 34 | 11 | 7 | 16 | 67 | 74 | 37 | 12 (18) | Deducted 3 points |
| 2008-09 | Welsh League Division Two | 34 | 15 | 10 | 9 | 73 | 52 | 55 | 8 (18) | |
| 2009-10 | Welsh League Division Two | 34 | 16 | 6 | 12 | 67 | 47 | 54 | 5 (18) | |
| 2010-11 | Welsh League Division Two | 30 | 10 | 6 | 14 | 40 | 50 | 36 | 12 (16) | |
| 2011-12 | Welsh League Division Two | 30 | 9 | 6 | 15 | 44 | 67 | 33 | 12 (16) | |
| 2012-13 | Welsh League Division Two | 30 | 13 | 7 | 10 | 54 | 49 | 46 | 6 (16) | |
| 2013-14 | Welsh League Division Two | 30 | 7 | 7 | 16 | 49 | 55 | 28 | 13 (16) | Relegated due to FAW re-structure |
| 2014-15 | Welsh League Division Three | 34 | 22 | 4 | 8 | 89 | 55 | 70 | 3 (180 | Promoted to WLD2 |
| 2015-16 | Welsh League Division Two | 30 | 16 | 3 | 11 | 59 | 44 | 51 | 5 (16) | |
| 2016-17 | Welsh League Division Two | 30 | 15 | 5 | 10 | 66 | 47 | 50 | 6 (16) | |
| 2017-18 | Welsh League Division Two | 30 | 20 | 3 | 7 | 74 | 37 | 63 | 3 (16) | Promoted to WLD1 |
| 2018-19 | Welsh League Division One | 30 | 10 | 6 | 14 | 51 | 57 | 36 | 9 (16) | |
