Reference

Georgia API county codes

Every Georgia API well number starts with 10, the state code. The next three digits are the county code, one of the 159 listed below, so a number beginning 10-001 belongs to a well in Appling County.

To decode a whole number, including the sidetrack and completion digits, paste it into the API well number decoder.

How to read a Georgia API number

10State: Georgia
001County: Appling
12345Well, unique within the county

The first ten digits identify one well. Two more digits can follow for a sidetrack, and two after that for a later completion. The county is the one where the well starts at the surface, so a horizontal well that crosses a county line keeps its surface county's code. A few state regulators assign the producing county instead, so the state record is the final word on a well near a boundary.

All 159 Georgia counties

County code County API numbers start
001 Appling 10-001-
003 Atkinson 10-003-
005 Bacon 10-005-
007 Baker 10-007-
009 Baldwin 10-009-
011 Banks 10-011-
013 Barrow 10-013-
015 Bartow 10-015-
017 Ben Hill 10-017-
019 Berrien 10-019-
021 Bibb 10-021-
023 Bleckley 10-023-
025 Brantley 10-025-
027 Brooks 10-027-
029 Bryan 10-029-
031 Bulloch 10-031-
033 Burke 10-033-
035 Butts 10-035-
037 Calhoun 10-037-
039 Camden 10-039-
043 Candler 10-043-
045 Carroll 10-045-
047 Catoosa 10-047-
049 Charlton 10-049-
051 Chatham 10-051-
053 Chattahoochee 10-053-
055 Chattooga 10-055-
057 Cherokee 10-057-
059 Clarke 10-059-
061 Clay 10-061-
063 Clayton 10-063-
065 Clinch 10-065-
067 Cobb 10-067-
069 Coffee 10-069-
071 Colquitt 10-071-
073 Columbia 10-073-
075 Cook 10-075-
077 Coweta 10-077-
079 Crawford 10-079-
081 Crisp 10-081-
083 Dade 10-083-
085 Dawson 10-085-
087 Decatur 10-087-
089 DeKalb 10-089-
091 Dodge 10-091-
093 Dooly 10-093-
095 Dougherty 10-095-
097 Douglas 10-097-
099 Early 10-099-
101 Echols 10-101-
103 Effingham 10-103-
105 Elbert 10-105-
107 Emanuel 10-107-
109 Evans 10-109-
111 Fannin 10-111-
113 Fayette 10-113-
115 Floyd 10-115-
117 Forsyth 10-117-
119 Franklin 10-119-
121 Fulton 10-121-
123 Gilmer 10-123-
125 Glascock 10-125-
127 Glynn 10-127-
129 Gordon 10-129-
131 Grady 10-131-
133 Greene 10-133-
135 Gwinnett 10-135-
137 Habersham 10-137-
139 Hall 10-139-
141 Hancock 10-141-
143 Haralson 10-143-
145 Harris 10-145-
147 Hart 10-147-
149 Heard 10-149-
151 Henry 10-151-
153 Houston 10-153-
155 Irwin 10-155-
157 Jackson 10-157-
159 Jasper 10-159-
161 Jeff Davis 10-161-
163 Jefferson 10-163-
165 Jenkins 10-165-
167 Johnson 10-167-
169 Jones 10-169-
171 Lamar 10-171-
173 Lanier 10-173-
175 Laurens 10-175-
177 Lee 10-177-
179 Liberty 10-179-
181 Lincoln 10-181-
183 Long 10-183-
185 Lowndes 10-185-
187 Lumpkin 10-187-
189 McDuffie 10-189-
191 McIntosh 10-191-
193 Macon 10-193-
195 Madison 10-195-
197 Marion 10-197-
199 Meriwether 10-199-
201 Miller 10-201-
205 Mitchell 10-205-
207 Monroe 10-207-
209 Montgomery 10-209-
211 Morgan 10-211-
213 Murray 10-213-
215 Muscogee 10-215-
217 Newton 10-217-
219 Oconee 10-219-
221 Oglethorpe 10-221-
223 Paulding 10-223-
225 Peach 10-225-
227 Pickens 10-227-
229 Pierce 10-229-
231 Pike 10-231-
233 Polk 10-233-
235 Pulaski 10-235-
237 Putnam 10-237-
239 Quitman 10-239-
241 Rabun 10-241-
243 Randolph 10-243-
245 Richmond 10-245-
247 Rockdale 10-247-
249 Schley 10-249-
251 Screven 10-251-
253 Seminole 10-253-
255 Spalding 10-255-
257 Stephens 10-257-
259 Stewart 10-259-
261 Sumter 10-261-
263 Talbot 10-263-
265 Taliaferro 10-265-
267 Tattnall 10-267-
269 Taylor 10-269-
271 Telfair 10-271-
273 Terrell 10-273-
275 Thomas 10-275-
277 Tift 10-277-
279 Toombs 10-279-
281 Towns 10-281-
283 Treutlen 10-283-
285 Troup 10-285-
287 Turner 10-287-
289 Twiggs 10-289-
291 Union 10-291-
293 Upson 10-293-
295 Walker 10-295-
297 Walton 10-297-
299 Ware 10-299-
301 Warren 10-301-
303 Washington 10-303-
305 Wayne 10-305-
307 Webster 10-307-
309 Wheeler 10-309-
311 White 10-311-
313 Whitfield 10-313-
315 Wilcox 10-315-
317 Wilkes 10-317-
319 Wilkinson 10-319-
321 Worth 10-321-

County names are the US Census names for these codes. The API standard does not promise the two match, so we checked them against state well records. Across 35 states, where this table names a county it matched the one the agency recorded on 85,091 of 85,100 wells. Offshore state and federal waters use their own pseudo-county codes, which are not listed here.

Finding the well itself

The API number stops at the county. It does not hold the well's coordinates, lease, survey section or operator. Those sit in the well record, which you find by searching the full number in the state agency's system. Search it at the Georgia oil and gas regulator.

Frequently asked questions

What is the API state code for Georgia?

10. API state codes run alphabetically from 01 for Alabama to 49 for Wyoming, then 50 for Alaska and 51 for Hawaii. They are not the Census FIPS state codes, which is a common source of wrong lookups.

How do I find the county from a Georgia API number?

Read digits three to five and find them in the table on this page. In 10-001-12345, the county code is 001, which is Appling County. If the code is missing from the table, it is usually an offshore area rather than an onshore county.

Does a Georgia API number give the well's exact location?

No. The number stops at the county. Coordinates, the lease and the survey location are in the well record held by the state agency, which you search with the full API number.

State codes: American Petroleum Institute Bulletin D12A well numbering standard. County names: US Census county FIPS names, checked against state well records. Reference generated .

How to cite this page

Sources: American Petroleum Institute Bulletin D12A well numbering standard; US Census county FIPS codes.

TetraSoft. (2026). Georgia API county codes. Reference generated 2026-09-24. https://tetrasoftco.com/tools/api-county-codes/georgia/