In 2020, there are 22 WalMart Stores in Maine. All locations are listed below.
No new WalMart stores opened or established WalMart stores closed in 2019 in the state of Maine.
| Store Number | Store Name | Store Type | Open Date | Address | City | State | Zip Code | Phone Number |
| 1788 | Walmart Supercenter | Supercenter | 8/4/1992 0:00 | 500 Gallery Blvd | Scarborough | ME | 4074 | (207) 885-5567 |
| 1797 | Walmart Supercenter | Supercenter | 11/2/1992 0:00 | 55 Thomaston Commons Way | Thomaston | ME | 4861 | (207) 596-0885 |
| 1856 | Walmart Supercenter | Supercenter | 1/5/1993 0:00 | 900 Stillwater Ave | Bangor | ME | 4401 | (207) 947-5254 |
| 1866 | Walmart Supercenter | Supercenter | 3/2/1993 0:00 | 615 Wilton Rd | Farmington | ME | 4938 | (207) 778-5344 |
| 1868 | Walmart Supercenter | Supercenter | 2/2/1993 0:00 | 100 Mount Auburn Ave | Auburn | ME | 4210 | (207) 784-0738 |
| 1919 | Walmart | Store | 2/2/1993 0:00 | 250 W Broadway | Lincoln | ME | 4457 | (207) 794-8436 |
| 1924 | Walmart Supercenter | Supercenter | 2/2/1993 0:00 | 781 Main St | Presque Isle | ME | 4769 | (207) 764-8485 |
| 1932 | Walmart Supercenter | Supercenter | 8/31/1993 0:00 | 17 Myrick St | Ellsworth | ME | 4605 | (207) 667-6780 |
| 1939 | Walmart Supercenter | Supercenter | 4/30/1993 0:00 | 15 Tibbetts Dr | Brunswick | ME | 4011 | (207) 725-0773 |
| 1954 | Walmart Supercenter | Supercenter | 4/30/1993 0:00 | 1930 Main St | Sanford | ME | 4073 | (207) 490-1988 |
| 1974 | Walmart | Store | 8/31/1993 0:00 | 17 Ludlow Rd | Houlton | ME | 4730 | (207) 532-2181 |
| 2013 | Walmart Supercenter | Supercenter | 9/28/1993 0:00 | 80 Waterville Commons Dr | Waterville | ME | 4901 | (207) 877-8774 |
| 2046 | Walmart Supercenter | Supercenter | 10/26/1993 0:00 | 201 Civic Center Dr | Augusta | ME | 4330 | (207) 623-8223 |
| 2047 | Walmart Supercenter | Supercenter | 1/4/1994 0:00 | 1573 Main St | Palmyra | ME | 4965 | (207) 368-2448 |
| 2143 | Walmart Supercenter | Supercenter | 9/27/1994 0:00 | 60 Fairgrounds Mkt Pl | Skowhegan | ME | 4976 | (207) 474-2126 |
| 2153 | Walmart Supercenter | Supercenter | 9/19/1995 0:00 | 50 Boulder Way | Biddeford | ME | 4005 | (207) 286-9551 |
| 2178 | Walmart Supercenter | Supercenter | 10/26/1994 0:00 | 379 South St | Calais | ME | 4619 | (207) 454-8178 |
| 2183 | Walmart Supercenter | Supercenter | 10/18/1994 0:00 | 1240 Main St | Oxford | ME | 4270 | (207) 743-0882 |
| 2202 | Walmart Supercenter | Supercenter | 10/26/1994 0:00 | 30 Landing Rd | Windham | ME | 4062 | (207) 893-0603 |
| 2659 | Walmart | Store | 8/19/1998 0:00 | 206 Us Rt 1 | Falmouth | ME | 4105 | (207) 781-3879 |
| 3269 | Walmart Supercenter | Supercenter | 6/19/2002 0:00 | 258 River Rd | Mexico | ME | 4257 | (207) 364-2557 |
| 5076 | Walmart Supercenter | Supercenter | 6/18/2003 0:00 | 24 Walton Dr | Brewer | ME | 4412 | (207) 989-5068 |