APCEO: Know Your Assembly Constituency

Select District and Type part of your Locality Name and Click on Search Button 
Recommended for Search: 4 letters approx. of your Colony Name

If You Do not enter Colony Name, All Colonies in the District Will Be Displayed .

official site of APCEO: 

http://ceoaperms.ap.gov.in/ElectrolSearch/AssemblyConstituency.aspx