Group I counties:
001 - Alamance
003 - Alexander
005 - Alleghany
007 - Anson
009 - Ashe
011 - Avery
013 - Beaufort
015 - Bertie
017 - Bladen
019 - Brunswick
021 - Buncombe
023 - Burke
025 - Cabarrus
027 - Caldwell
029 - Camden
031 - Carteret
033 - Caswell
035 - Catawba
037 - Chatham
039 - Cherokee
041 - Chowan
X01 - Clay
045 - Cleveland
047 - Columbus
049 - Craven
051 - Cumberland
053 - Currituck
055 - Dare
057 - Davidson
059 - Davie
061 - Duplin
063 - Durham
065 - Edgecombe
067 - Forsyth
069 - Franklin
071 - Gaston
073 - Gates
075 - Graham
077 - Granville
079 - Greene
081 - Guilford
083 - Halifax
085 - Harnett
087 - Haywood
089 - Henderson
091 - Hertford
093 - Hoke
095 - Hyde
097 - Iredell
099 - Jackson
101 - Johnston
103 - Jones
105 - Lee
107 - Lenoir
109 - Lincoln
111 - Macon
113 - Madison
115 - Martin
117 - McDowell
119 - Mecklenburg
121 - Mitchell
123 - Montgomery
125 - Moore
127 - Nash
129 - New Hanover
X03 - Northampton
133 - Onslow
135 - Orange
137 - Pamlico
141 - Pasquotank
139 - Pender
143 - Perquimans
145 - Person
147 - Pitt
149 - Polk
151 - Randolph
153 - Richmond
155 - Robeson
157 - Rockingham
159 - Rowan
161 - Rutherford
163 - Sampson
165 - Scotland
167 - Stanly
169 - Stokes
171 - Surry
173 - Swain
175 - Transylvania
177 - Tyrrell
179 - Union
181 - Vance
183 - Wake
185 - Warren
187 - Washington
189 - Watauga
191 - Wayne
193 - Wilkes
195 - Wilson
197 - Yadkin
199 - Yancey
Group II counties:
001 - Alamance
003 - Alexander
005 - Alleghany
007 - Anson
009 - Ashe
011 - Avery
013 - Beaufort
015 - Bertie
017 - Bladen
019 - Brunswick
021 - Buncombe
023 - Burke
025 - Cabarrus
027 - Caldwell
029 - Camden
031 - Carteret
033 - Caswell
035 - Catawba
037 - Chatham
039 - Cherokee
041 - Chowan
X01 - Clay
045 - Cleveland
047 - Columbus
049 - Craven
051 - Cumberland
053 - Currituck
055 - Dare
057 - Davidson
059 - Davie
061 - Duplin
063 - Durham
065 - Edgecombe
067 - Forsyth
069 - Franklin
071 - Gaston
073 - Gates
075 - Graham
077 - Granville
079 - Greene
081 - Guilford
083 - Halifax
085 - Harnett
087 - Haywood
089 - Henderson
091 - Hertford
093 - Hoke
095 - Hyde
097 - Iredell
099 - Jackson
101 - Johnston
103 - Jones
105 - Lee
107 - Lenoir
109 - Lincoln
111 - Macon
113 - Madison
115 - Martin
117 - McDowell
119 - Mecklenburg
121 - Mitchell
123 - Montgomery
125 - Moore
127 - Nash
129 - New Hanover
X03 - Northampton
133 - Onslow
135 - Orange
137 - Pamlico
141 - Pasquotank
139 - Pender
143 - Perquimans
145 - Person
147 - Pitt
149 - Polk
151 - Randolph
153 - Richmond
155 - Robeson
157 - Rockingham
159 - Rowan
161 - Rutherford
163 - Sampson
165 - Scotland
167 - Stanly
169 - Stokes
171 - Surry
173 - Swain
175 - Transylvania
177 - Tyrrell
179 - Union
181 - Vance
183 - Wake
185 - Warren
187 - Washington
189 - Watauga
191 - Wayne
193 - Wilkes
195 - Wilson
197 - Yadkin
199 - Yancey
Group III counties:
001 - Alamance
003 - Alexander
005 - Alleghany
007 - Anson
009 - Ashe
011 - Avery
013 - Beaufort
015 - Bertie
017 - Bladen
019 - Brunswick
021 - Buncombe
023 - Burke
025 - Cabarrus
027 - Caldwell
029 - Camden
031 - Carteret
033 - Caswell
035 - Catawba
037 - Chatham
039 - Cherokee
041 - Chowan
X01 - Clay
045 - Cleveland
047 - Columbus
049 - Craven
051 - Cumberland
053 - Currituck
055 - Dare
057 - Davidson
059 - Davie
061 - Duplin
063 - Durham
065 - Edgecombe
067 - Forsyth
069 - Franklin
071 - Gaston
073 - Gates
075 - Graham
077 - Granville
079 - Greene
081 - Guilford
083 - Halifax
085 - Harnett
087 - Haywood
089 - Henderson
091 - Hertford
093 - Hoke
095 - Hyde
097 - Iredell
099 - Jackson
101 - Johnston
103 - Jones
105 - Lee
107 - Lenoir
109 - Lincoln
111 - Macon
113 - Madison
115 - Martin
117 - McDowell
119 - Mecklenburg
121 - Mitchell
123 - Montgomery
125 - Moore
127 - Nash
129 - New Hanover
X03 - Northampton
133 - Onslow
135 - Orange
137 - Pamlico
141 - Pasquotank
139 - Pender
143 - Perquimans
145 - Person
147 - Pitt
149 - Polk
151 - Randolph
153 - Richmond
155 - Robeson
157 - Rockingham
159 - Rowan
161 - Rutherford
163 - Sampson
165 - Scotland
167 - Stanly
169 - Stokes
171 - Surry
173 - Swain
175 - Transylvania
177 - Tyrrell
179 - Union
181 - Vance
183 - Wake
185 - Warren
187 - Washington
189 - Watauga
191 - Wayne
193 - Wilkes
195 - Wilson
197 - Yadkin
199 - Yancey
Group IV counties:
001 - Alamance
003 - Alexander
005 - Alleghany
007 - Anson
009 - Ashe
011 - Avery
013 - Beaufort
015 - Bertie
017 - Bladen
019 - Brunswick
021 - Buncombe
023 - Burke
025 - Cabarrus
027 - Caldwell
029 - Camden
031 - Carteret
033 - Caswell
035 - Catawba
037 - Chatham
039 - Cherokee
041 - Chowan
X01 - Clay
045 - Cleveland
047 - Columbus
049 - Craven
051 - Cumberland
053 - Currituck
055 - Dare
057 - Davidson
059 - Davie
061 - Duplin
063 - Durham
065 - Edgecombe
067 - Forsyth
069 - Franklin
071 - Gaston
073 - Gates
075 - Graham
077 - Granville
079 - Greene
081 - Guilford
083 - Halifax
085 - Harnett
087 - Haywood
089 - Henderson
091 - Hertford
093 - Hoke
095 - Hyde
097 - Iredell
099 - Jackson
101 - Johnston
103 - Jones
105 - Lee
107 - Lenoir
109 - Lincoln
111 - Macon
113 - Madison
115 - Martin
117 - McDowell
119 - Mecklenburg
121 - Mitchell
123 - Montgomery
125 - Moore
127 - Nash
129 - New Hanover
X03 - Northampton
133 - Onslow
135 - Orange
137 - Pamlico
141 - Pasquotank
139 - Pender
143 - Perquimans
145 - Person
147 - Pitt
149 - Polk
151 - Randolph
153 - Richmond
155 - Robeson
157 - Rockingham
159 - Rowan
161 - Rutherford
163 - Sampson
165 - Scotland
167 - Stanly
169 - Stokes
171 - Surry
173 - Swain
175 - Transylvania
177 - Tyrrell
179 - Union
181 - Vance
183 - Wake
185 - Warren
187 - Washington
189 - Watauga
191 - Wayne
193 - Wilkes
195 - Wilson
197 - Yadkin
199 - Yancey