Size Categories of Local Sections

ACS Local Sections

Membership Counts as of 12/31/16

Very Large (3,200+ members)
 LS_ID  Local Section # of members
L601 California 3217
L315 Chemical Society of Washington 3596
L501 Chicago 3981
L108 New York 3687
L303 North Jersey 4278
L109 Northeastern 6560
L304 Philadelphia 4763
Large Local Sections (1,600 - 3,199 members)
 LS_ID  Local Section # of members
L558 Colorado 2598
L102 Connecticut Valley 1757
L414 Georgia 1928
L436 Greater Houston 2665
L301 Maryland 1928
L513 Minnesota 2279
L251 North Carolina 2082
L215 Pittsburgh 1841
L621 Puget Sound 1929
L626 San Diego 2515
L628 Santa Clara Valley 2632
L633 Southern California 2653
Medium Large Local Sections (800 -1,599 members)
 LS_ID  Local Section # of members
L446 Central Texas 820
L202 Cincinnati 1282
L203 Cleveland 937
L204 Columbus 1046
L452 Dallas-Fort Worth 1519
L300 Delaware 1433
L207 Detroit 1358
L104 Eastern New York 938
L413 Florida 815
L233 Indiana 1340
L318 Lehigh Valley 854
L236 Nashville
801
L107 New Haven 823
L616 Orange County 1214
L445 Portland 859
L445 Puerto Rico 1583
L623 Sacramento 957
L627 San Gorgonio 821
L409 South Florida 1176
L523 St. Louis 1425
L246 Virginia 1388
L442 Western Carolinas 846
Medium Local Sections (400 - 799 members)
 LS_ID  Local Section # of members
L200 Akron 748
L400 Alabama 472
L403 Baton Rouge 427
L644 California Los Padres 663
L405 Carolina-Piedmont 687
L602 Central Arizona 711
L455 Central Arkansas 419
L101 Central Massachusetts 615
L557 Central New Mexico 783
L112 Central New York 419
L248 Central North Carolina 566
L320 Central Pennsylvania 473
L206 Dayton 405
L556 East Central Illinois 514
L218 East Tennessee 732
L220 Huron Valley 724
L505 Iowa 436
L230 Kalamazoo 406
L508 Kansas City 620
L419 Louisiana 486
L105 Maine 400
L211 Midland 638
L512 Milwaukee 794
L422 Mississippi 487
L458 Oklahoma 520
L617 Oregon 455
L411 Orlando 600
L305 Princeton 545
L239 Purdue 479
L111 Rhode Island 496
L622 Richland 517
L118 Rochester 710
L564 Salt Lake 747
L447 San Antonio 516
L435 South Carolina 776
L627 San Gorgonio 799
L435 South Carolina 758
L308 Southeastern Pennsylvania 677
L632 Southern Arizona 496
L566 St. Joseph Valley 414
L406 Tampa Bay 735
L450 Texas A&M 454
L307 Trenton 648
L205 Virginia Blue Ridge 521
L113 Western Connecticut 618
L119 Western New York 730
L536 Wisconsin 721
Medium Small Local Sections (200 - 399 members)
 LS_ID  Local Section # of members
L500 Ames 379
L402 Auburn 284
L404 Brazosport 246
L641 Central Utah 241
L217 Chattanooga 234
L410 Coastal Georgia 223
L103 Cornell 277
L451 East Texas 205
L249 Eastern North Carolina 266
L114 Green Mountain 276
L250 Hampton Roads 313
L608 Hawaii 230
L518 Illinois Heartland 246
L417 Jacksonville 275
L506 Joliet 287
L562 Kalamazoo 391
L228 Lexington 337
L229 Louisville 376
L456 Memphis 355
L231 Michigan State University 355
L106 Mid-Hudson 358
L563 Montana 286
L514 Nebraska 319
L427 Northeast Georgia 336
L237 Northeast Tennessee 290
L515 Northeast Wisconsin 293
L225 Northern West Virginia 225
L420 Ole Miss
202
L517 Omaha 204
L521 Red River Valley 213
L461 Rio Grande Valley 213
L607 San Joaquin Valley 200
L434 Savannah River 280
L524 Sioux Valley 242
L306 South Jersey 338
L448 South Texas 226
L241 Southern Indiana 207
L600 Southern Nevada 259
L121 Susquehanna Valley 266
L219 Toledo 362
L463 Tulsa 229
L531 University of Missouri 220
L530 Wakarusa Valley 285
L637 Washington-Idaho Border 215
L232 Western Michigan
386
L535 Wichita 243
Small Local Section (50-199 members)
 LS_ID  Local Section # of members
L643 Alaska 118
L100 Binghamton 181
L227 Central Ohio Valley 125
L539 Central Wisconsin 121
L116 Corning 184
L540 Decatur-Springfield 162
L123 Erie 137
L453 Heart O' Texas 140
L561 Idaho 146
L502 Illinois-Iowa 169
L209 Indiana-Kentucky Border 151
L610 Inland Northwest 118
L224 Kanawha Valley 136
L509 Kansas State University 133
L234 Kentucky Lake 172
L537 LaCrosse-Winona 159
L510 Lake Superior 135
L520 Mark Twain 93
L454 Middle Georgia 154
L423 Mobile 158
L611 Mojave Desert 176
L526 Mo-Kan-Ok, The Tri-State 128
L425 North Alabama 195
L101 Northeastern Indiana 123
L212 Northeastern Ohio 181
L110 Northern New York 136
L210 Northwest Central Ohio 118
L401 Northwest Louisiana 106
L430 Ouachita Valley 90
L548 Ozark 185
L459 Panhandle Plains 75
L124 Penn-York 74
L431 Pensacola 189
L460 Permian Basin 123
L547 Rock River 191
L433 Sabine-Neches 89
L565 Snake River 190
L525 South Central Missouri 131
L462 South Plains 161
L527 Southern Illinois 122
L416 Southwest Georgia 132
L437 Southwest Louisiana 165
L464 University of Arkansas 168
L221 Upper Ohio Valley 132
L532 Upper Peninsula 105
L567 Wabash Valley 86
L316 Western Maryland 117
L465 Wichita Falls-Duncan 94
L444 Wilson Dam 81
L223 Wooster 132
L568 Wyoming 180