Intergroups are subsets of OA regions formed by groups of OA meetings nearby to each other. Representatives of intergroups conduct the business of each region. To find meeting information organized according to intergroups, go to OA.org and use the interface to refine the intergroups(s) you seek information for.
The five-digit number at the end of each entry is the intergroup’s ID number with the World Service Office of Overeaters Anonymous.
1. Central Ontario
(North Central Ontario, Toronto, West Kitchener, and East Belleville) 09110
2. Western New York
(including Erie, Niagara, Orleans, and Allegheny counties) 09056
3. Greater Rochester (NY)
(Rochester and surrounding counties) 09055
4. Greater Syracuse (NY)
(Central New York) 09067
5. Ottawa District (ON)
(Eastern Ontario & northern New York State) 09275
6. Overeaters Anonymous Southern Tier (NY)
(Binghamton, New York, and Southern Tier) 09148
7. Staten Island (NY) 09137
8. Greater NY OA Metro
(All five boroughs of New York City) 09033
9. Westchester United (NY)
(Westchester and Putnam counties) 09038
10. Mid Hudson (NY)
(Ulster, Orange, Dutchess, Greene, Sullivan, and Columbia counties) 09206
11. NYS Capital District (NY)
(Albany, Columbia, Green, Montgomery, Rensselaer, Saratoga, Schenectady, Schoharie, Warren, and Washington counties; Arlington and Bennington VT) 09079
12. Nassau County (NY)
(Nassau County and parts of Queens County, Long Island) 09034
13. OA Francais de Montreal (QC)
(Eastern region of Canada) 09160
14. Montreal English (QC) 09140
15. Suffolk (NY)
(Suffolk County) 09036
16. Green Mountain North (VT)
(Northern Vermont and nearby areas) 09543
17. Southwestern Connecticut (CT)
(Fairfield and New Haven counties) 09278
18. Connecticut (CT)
(Connecticut, excluding Fairfield and New Haven counties) 09054
19. Western Mass.
(from Worcester to NY line) 09130
20. Central Massachusetts 09106
21. New Hampshire OA
(State of New Hampshire, excluding Seacoast area) 09190
22. Ocean and Bay (RI)
(Rhode Island and Southeast Massachusetts) 09449
23. OA Francais De L’outaouais (QC)
(Western Quebec) 09600
24. Metrowest (MA)
(Boston Metro Area west to Marlboro) 09357
25. Mass Bay (MA)
(Massachusetts) 09025
26. South Coastal Mass.
(South Shore of Massachusetts) 09556
27. North Shore (MA)
(Greater Boston, north of Boston) 09200
28. Cape Cod (MA) 09125
29. Southern Maine
(Including Portland, York, Bath, Augusta, Waterville and Scarborough) 09327
30. OA de Quebec
(Eastern Quebec and New Brunswick) 09330
31. Maritimes
(Nova Scotia, Prince Edward Island, New Brunswick) 09262
32. Island
(Newfoundland) 09392
Connecticut
| Name | State | Service Area | Website URL | Number |
| Connecticut IG | CT | Connecticut, excluding Fairfield and New Haven counties | http://www.connecticutoa.org/ | 09054 |
| Southwestern Connecticut IG | CT | Fairfield and New Haven counties | http://www.swctoa.org/ | 09278 |
| South Eastern Connecticut IG | CT | Southeastern Connecticut | http://oasect.blogspot.com/ | 09531 |
Massachusetts
| Name | State | Service Area | Website URL | Number |
| Mass Bay IG | MA | Massachusetts | http://www.oambi.org/ | 09025 |
| Central Massachusetts IG | MA | Central Massachusetts | http://www.centmassint.org/ | 09106 |
| Cape Cod IG | MA | Cape Cod (MA) | http://capecodoa.org/ | 09125 |
| Western Mass IG | MA | Western Massachusetts from Worcester to NY State Line | http://www.oawmass.org/wordpress/ | 09130 |
| North Shore IG | MA | Greater Boston and North of Boston | http://www.oanorthshoreintergroup.org/ | 09200 |
| MetroWest IG | MA | Boston Metro Area west to Marlboro | http://www.metrowestoa.org/ | 09357 |
| South Coastal Mass IG | MA | South Shore Massachusetts | http://www.scmioa.org/ | 09556 |
Maine
| Name | State | Service Area | Website URL | Number |
| Southern Maine IG | ME | Southern Maine, including Portland, York, Bath, Augusta, Waterville and Scarborough | http://www.oamaine.org/ | 09327 |
New Hampshire
| Name | State | Service Area | Website URL | Number |
| New Hampshire OA IG | NH | State of New Hampshire, excluding Seacoast (Eastern NH) area | http://www.oanewhampshire.org/ | 09190 |
New York
| Name | State | Service Area | Website URL | Number |
| Greater NY OA Metro IG Inc | NY | Five Boroughs of New York City | http://www.oanyc.org/ | 09033 |
| Nassau County IG | NY | Nassau County and parts of Queens County, Long Island, N.Y. | http://www.nassauoa.org/ | 09034 |
| Suffolk County IG | NY | Suffolk County, Long Island | http://www.suffolkoa.org | 09036 |
| Westchester United IG | NY | Westchester and Putnam counties | http://oawestchesterny.org | 09038 |
| Greater Rochester IG | NY | Rochester and surrounding counties | http://www.rochesteroa.org/ | 09055 |
| Western New York IG | NY | Western New York, including Erie, Niagara, Orleans, and Allegheny counties | http://www.oawny.org/ | 09056 |
| Greater Syracuse IG | NY | Central New York | https://oasyr.wordpress.com/ | 09067 |
| NYS Capital District IG | NY | Albany, Columbia, Green, Montgomery, Rensselaer, Saratoga, Schenectady, Schoharie, Warren, and Washington counties. Arlington and Bennington VT. | http://oanyscd.org/ | 09079 |
| Staten Island IG | NY | All of Staten Island | http://www.sioa.org/ | 09137 |
| Overeaters Anonymous Southern Tier IG | NY | Binghamton, New York, and Southern Tier | https://oastier.wordpress.com/ | 09148 |
| Mid Hudson IG | NY | Ulster, Orange, Dutchess, Greene, Sullivan, and Columbia counties, Mid-Hudson NY. | http://midhudsonoa.org/ | 09206 |
Newfoundland and Labrador
| Name | Province | Service Area | Website URL | Number |
| Island IG | NL | Newfoundland | https://oanl.org | 09392 |
Maritimes
| Name | Province | Service Area | Website URL | Number |
| Maritimes IG | NS, NB, PEI | Nova Scotia, Prince Edward Island, New Brunswick | https://oamig.org | 09262 |
Ontario
| Name | Province | Service Area | Website URL | Number |
| Central Ontario IG | ON | North Central Ontario, Toronto, West Kitchener, and East Belleville | http://www.oaontario.org/ | 09110 |
| Ottawa District IG | ON | Eastern Ontario & Northern New York State | http://www.oa-ottawa.ca | 09275 |
Québec
| Name | Province | Service Area | Website URL | Number |
| Montreal English IG | QC | Montreal | https://oamontrealenglish.org/ | 09140 |
| IG OA Francais de Montreal | QC | Eastern Region of Canada | http://outremangeurs.org/ | 09160 |
| IG OA de Quebec | QC | Eastern Quebec and New Brunswick | http://www.oaquebec.org/ | 09330 |
| IG OA Francais De L’outaouais | QC | Western Quebec | http://oa-ottawa.ca/loutaouais/ | 09600 |
Rhode Island
| Name | State | Service Area | Website URL | Number |
| Ocean and Bay IG | RI | All of Rhode Island and Southeast Massachusetts | http://www.oceanandbay.org/ | 09449 |
Vermont
| Name | State | Service Area | Website URL | Number |
| Green Mountain North IG | VT | Northern Vermont and nearby areas | http://www.oavermont.org/ | 09543 |
If your intergroup information is incorrect on this page, please confirm that your intergroup information is correct on the World Service site, and we will update based on your World Service Listing. Please visit the Contact Us page to communicate changes or corrections.