Question: What is the local authority area for the town in which President Obama 's stepmother lives ?

text: RG postcode area
Coverage
The approximate coverage of the postcode districts :
The RG postcode area, also known as the Reading postcode area, is a group of thirty postcode districts in England, within twelve post towns. These cover west and central Berkshire (including Reading, Bracknell, Crowthorne, Hungerford, Newbury, Thatcham and Wokingham) and north Hampshire (including Basingstoke, Hook, Tadley and Whitchurch), plus a small part of south-east Oxfordshire (including Henley-on-Thames) and very small parts of Buckinghamshire and Wiltshire. Mail for the area is sorted at the Thames Valley Mail Centre in Swindon, having been sorted at the Reading Mail Centre until its closure in 2010. The original RG3 district for west Reading was recoded to RG30 and RG31 in January 1995, due to the rise in population in that area. In the same year, the original RG11 district for Wokingham and Crowthorne was recoded to RG40, RG41 and RG45, while the northern part of the RG12 district for Bracknell was recoded to RG42.
Postcode district Post town Coverage Local authority area
RG1 READING Katesgrove , Newtown , Reading ( central ) Reading
RG2 READING Madejski Stadium , Whitley , Shinfield , Arborfield Garrison , Arborfield Reading , Wokingham
RG4 READING Caversham , Sonning , Sonning Common , Kidmore End , Sonning Eye , Dunsden Green , Mapledurham , Chazey Heath , Tokers Green , Chalkhouse Green , Cane End Reading , South Oxfordshire , Wokingham
RG5 READING Woodley Wokingham
RG6 READING Earley Wokingham , Reading
RG7 READING Aldermaston , Bradfield , Burghfield Common , Riseley , Silchester , Mortimer , Swallowfield , Theale , Woolhampton West Berkshire , Basingstoke and Deane , Wokingham
RG8 READING Goring , Streatley , Pangbourne , Whitchurch-on-Thames South Oxfordshire , West Berkshire
RG9 HENLEY-ON-THAMES Hambleden , Rotherfield Peppard , Turville , Turville Heath , Skirmett , Rockwell End , Mill End , Fawley , Fingest , Frieth , Greenlands , Nettlebed , Shiplake , Henley-on-Thames South Oxfordshire , Wycombe
RG10 READING Charvil , Hurst , Ruscombe , Twyford , Wargrave , Waltham St Lawrence Wokingham , Windsor and Maidenhead
RG12 BRACKNELL Bracknell ( south and town centre ) , Easthampstead , Bullbrook Bracknell Forest
RG14 NEWBURY Newbury ( whole town area ) West Berkshire
RG17 HUNGERFORD Chilton Foliat , Eastbury , Eddington , Kintbury , Hungerford , Inkpen , Lambourn , North Wessex Downs AONB area West Berkshire , Wiltshire
RG18 THATCHAM Hampstead Norreys , Hermitage , Thatcham ( north ) , Yattendon West Berkshire
RG19 THATCHAM Ashford Hill with Headley , Bishop 's Green , Greenham , Thatcham ( south ) West Berkshire , Basingstoke and Deane
RG20 NEWBURY Ashmansworth , Chieveley , Compton , Ecchinswell , Leckhampstead , Highclere , Kingsclere , Sydmonton West Berkshire , Basingstoke and Deane
RG21 BASINGSTOKE Town Centre , Eastrop , Black Dam , Oakridge , South View Basingstoke and Deane
RG22 BASINGSTOKE South Ham , Brighton Hill , Kempshott , Buckskin , Beggarwood Basingstoke and Deane
RG23 BASINGSTOKE Winklebury , Rooksdown , Oakley Basingstoke and Deane
RG24 BASINGSTOKE Popley , Chineham , Sherborne St John Basingstoke and Deane
RG25 BASINGSTOKE Cliddesden , Dummer , Overton , North Waltham Basingstoke and Deane