Geospatial Subteam Geocoding Flowchart

Geocoding
Flowchart

Bucket 1 – High Precision

Any point or shape (geography)
that fits entirely within a single
census tract AND that point or
shape meets or exceeds the
minimum match score.

Geocode All Addresses
(After cleaning and standardizing)

Yes

Does it meet minimum
match score?

Yes

Does it match to a
lat/long?

No
No
Yes

No

Does it meet minimum
match score?

Yes

Did the address match
to a road segment,
town, or zip contained
within 1 CT?

Bucket 2 – Low Precision

Either: (1) address did fit
entirely within a single census
tract but did not meet “high
precision” minimum match
score OR (2) address did not fit
entirely within a single census
tract or geocode to a census
tract but is then spatially joined
or otherwise imputed to a
census tract.

No

Yes

Can the subcounty
unit be imputed
properly?

Yes

Is a subcounty unit
(town, zip, etc.) of the
record known?

No

No

Bucket 3 – Known County

The geography that the
software geocoded the record
to fits within the county
identified. Report at county
level.

Yes

No

Bucket 4 – Known State
Address cannot be reasonably
matched to a county or any
sub-geography. Report at state
level.

Does the input County
match the output
County?