
Location Codes
MapMarker USA 25 318 User Guide
Street Centroid Location Codes
Street centroid Location Codes indicate the Census ID accuracy and the position of the geocode on
the returned street segment. The Structure of Street Centroid Location Codes shows how street
centroid Location Codes are formatted.
The Street Centroid Location Codes (C Codes) table provides a detailed description of the street
centroid Location Codes. These always begin with the letter C.
Structure of Street Centroid Location Codes
Character Position Description
1st character Always C indicating a location derived from a street
segment.
2nd character Census ID accuracy based on the search area used to
obtain matching Street Segment.
3rd character Location of geocode on the returned street segment.
Street Centroid Location Codes (C Codes)
Character
position Code Description
2nd Character Census ID Accuracy
B Block Group accuracy (most accurate). Based on
input ZIP Code.
T Census Tract accuracy. Based on input ZIP Code.
C Unclassified Census accuracy. Normally accurate
to at least the County level. Based on input ZIP
Code.
F Unknown Census accuracy. Based on Finance
area.
P Unknown Census accuracy. Based on input City.
3rd Character Location of candidate on segment.
C Segment Centroid.
L Segment low-range end point.
H Segment high-range end point.
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