Tax Area Code:
Specific loactions a are identified by Section Township and Range.
The Land Ordinance of 1785 devised a system base lines and meridian lines using to survey the western lands outside the initial 13 colonies. Base lines run east/west and meridian lines run north/south. Along these lines the land was divided into 6 square mile blocks, called "Townships". Each Township is given a identifying number, according to where it falls. The east/west numbers are identified by the term "Range" and the north/south numbers are identified by the term "Township". Each township is divided into 36 square-mile parcels of 640 acres, called "Sections".
A designation of POR. SEC. 16, T.10N, R.6E M.D.B&M refers to: Portion of Section 16 of Township 10 North, Range 6 East, Mount Diablo Base and Meridian.

A parcel # of 203-0240-001-000
        Book  ---
             Page ---
              Block  -
                Parcel ---
                     Block ---
                     
Numbering Scheme:
Sections in a Township  Blocks in a Section
 6  5  4  3  2  1       D C B A
 7  8  9 10 11 12       E F G H
18 17 16 15 14 13       M L K J
19 20 21 22 23 34       N P Q R
30 29 28 27 26 25
31 32 33 34 35 36