Kolli Hills

Total Area                    : 283.93 Sq.Km

Total Population           : 36525

Male    - 18,992

Female – 17,553

Total number of small villages : 275

Total number of main revenue villages + Panchayaths : 14

Names of the main villages + Panchayaths

1)      Valavanthi Nadu

2)      Thinnanur Nadu

3)      Selur Nadu

4)      Devanur Nadu

5)      Ariyur Nadu

6)      Valappur Nadu

7)      Kundur Nadu

8)      Thiruppuli Nadu

9)      Edappuli Nadu

10)  Bile Nadu

11)  Chittoor Nadu

12)  Perakkarai Nadu

13)  Alathur Nadu

14) Kunduni Nadu

Total No of Schools   : 56

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Schools	No.	No. of Boys	No. of Girls	Total Students
Higher secondary School Semmedu GTR	1	165	162	327
High Schools Sengarai GTR Thempallam Govt                                                                                   school	2	257	76	333
Middle Schools	17	816	695	1511
Panchayat Union Elementary Schools	36	805	761	1566
Total	56	2043	1694	3737

No. of  NGO’s : 3

1)      DTMC

2)      M.S.Swaminathan Foundation

3)      CST

In Semmedu

1)      BDO office

2)      Police Station

3)      PHC

4)      Fire Station

5)      Telephone Exchange

No. of Primary Health Centres

1)      Powerkadu in Edappulinadu Village.

2)      Semmedu in Valavanthi Nadu Village.

Temples :

1)      Arappleesuwarar Temple.

2)      Ettukkai Amman Temple ( Kollippavai).

3)      Maasi Periya samy Temple.