There are 35 Churches in Wales which are affiliated to the Congregational Federation. A further 24 unaffiliated English Speaking Congregational Churches have some links to the Federation through the 'Unaffiliated Congregational Churches Charities'. Federation member Churches are shown in green and unaffiliated Churches are shown in blue.

Pembrokeshire

• FREYSTROP : Bethel, Middle Hill, Services at 9:30am; Website
• HAVERFORDWEST : Tabernacle, Barn Street / City Road, Services at 11am, 4pm ( winter ), 6pm ( Summer ), 2:30pm 2nd Sunday ( in Welsh ); Website
• LUDCHURCH : Longstone, Services at 11am
• SAUNDERSFOOT : Sardis, Kilgetty
• SAUNDERSFOOT : Thomas Memorial, High Street

• AMMANFORD : English Congregational Church, Iscennen Road, Services at 11am and 5:30pm
• BURRY PORT : English Congregational Church, Memorial Square, Parc-y-Minos Street, Services at 3pm
• CARMARTHEN : English Congregational Church, Lammas Street, Services at 11am
• WHITLAND : English Conrgegational Church, West Street, Services at 10:30am
• LAUGHARNE : English Congregational Church, Kings Street
  

Swansea, Neath / Port Talbot

• BRITON FERRY : Now meeting in Bethesda Welsh Independent Chapel, Cwrt Sart. Services at 3.00 p.m.
• NEATH : New Maria, Brookdale Street, Services at 11am and 6pm
• NEATH : Penydre. Service at 6.00 p.m.; Website
• PORT TALBOT : Grange Street, Services at 11am, Sunday School at 2:30pm
• SWANSEA : Fabians Bay, Balaclava Street, St. Thomas, Services at 11am and 6:30pm
• SWANSEA : Paraclete, Newton, Mumbles. Services at 11am and 6pm
• SWANSEA : Upper Killay, Gower Road. Services at 11am and 6pm
• GORSEINON : Bethel
• GROVESEND : Mount Pleasant

• DOWLAIS : Ivor, Ivor Street, Services at 11am and 6pm; Website
• HIRWAUN : Mount Pleasant. Service at 3.00 p.m.
• PENRHYS : Llanfair, Services at 9:30am and 3:15pm
• TON PENTRE : Church Road, Services at 11am and 6pm
• TREBANOG : English Congregational Church, Trebanog Road, Services at 2:30pm and 6pm
• NELSON

• BARRY : English Congregational Church, Tynewydd Road, Services at 11am
• NEWTON, PORTH CAWL : Hope

• ABERTILLERY : Tabernacle, Chapel Street, Services at 11am and 6pm
• BEAUFORT : Carmel, Carmel Town, Services at 2:30pm
• BLAENAVON : Bethlehem, Broad Street, Services at 6pm
• EBBW VALE : West End, Tredegar Road, Services at 11am and 6pm
• LLANHILLETH : Zion, High Street, Services at 11am and 6pm
• MARKHAM, BLACKWOOD : Services at 6pm
• PONTYPOOL : Emmaus, Freeholdland, Pontnewynydd, Services at 6pm
• RHIWDERIN : Tabernacle, Chapel Row, Services at 11am and 6pm
• SIRHOWY : Ebenezer, Services at 10:30am and 6pm
• TALLISTOWN, CWM : Marine Street, Services at 11am and 6pm
• TREDEGAR : Saron, Services at 10:30am and 4pm
• BARGOED
• BRYNMAWR : Bethesda
• BRYNMAWR : Rehoboth
• CROSS KEYS : Trinity
• GARNDIFFAITH : Sardis
• GRIFFITHS TOWN
• NEW INN
• PENTWYN, PONTYPOOL
• TREDEGAR : Bethania

Powys

• ABERHAFESP, NEWTOWN : Bethel, Bwlchgarreg Road, Services at 2pm
• BWLCH-Y-FFRIDD, NEWTOWN : Services at 2:30pm
• FORDEN : Ebenezer, Services at 2:30pm and 6:30pm (this Church is connected with the Federation's Northwest Midland Area)
• RHOSGOCH, NEAR PAINSCASTLE : Hermon, Services at 2:30pm alternate Sundays, 6pm alternate Sundays.
• CRICKADARN : Hebron
• CWM RHOS : Penuel
• LLANGATTOCK : Bethesda
• PAINSCASTLE
• TALYBONT ON USK : Aber
• TALYBONT ON USK : Benaiah

• COED POETH : Bethlehem, Smithy Road, Penygelli, Services at 3:30pm
• PONTYBODKIN
• RUABON