Size Categories of Local Sections

ACS Local Sections

Membership Counts as of 12/31/15

Very Large (3,200+ members)
 LS_ID  Local Section # of members
L601 California 3439
L315 Chemical Society of Washington 3755
L501 Chicago 4085
L108 New York 3699
L303 North Jersey 4406
L109 Northeastern 6644
L304 Philadelphia 4470
Large Local Sections (1,600 - 3,199 members)
 LS_ID  Local Section # of members
L558 Colorado 2767
L102 Connecticut Valley 1791
L414 Georgia 1963
L436 Greater Houston 2815
L301 Maryland 1894
L513 Minnesota 2285
L426 North Carolina 2100
L215 Pittsburgh 1826
L445 Puerto Rico 1623
L621 Puget Sound 1930
L626 San Diego 2369
L628 Santa Clara Valley 2730
L633 Southern California 2639
Medium Large Local Sections (800 -1,599 members)
 LS_ID  Local Section # of members
L446 Central Texas 901
L202 Cincinnati 1331
L203 Cleveland 965
L204 Columbus 1077
L452 Dallas-Fort Worth 1044
L300 Delaware 1442
L207 Detroit 1378
L104 Eastern New York 947
L413 Florida 821
L233 Indiana 1373
L120 Lehigh Valley 888
L512 Milwaukee 829
L107 New Haven 861
L616 Orange County 1249
L445 Portland 822
L623 Sacramento 976
L409 South Florida 1211
L523 St. Louis 1485
L246 Virginia 1371
L442 Western Carolinas 827
Medium Local Sections (400 - 799 members)
 LS_ID  Local Section # of members
L200 Akron 775
L400 Alabama 510
L403 Baton Rouge 431
L644 California Los Padres 642
L405 Carolina-Piedmont 696
L602 Central Arizona 727
L101 Central Massachusetts 642
L557 Central New Mexico 782
L407 Central North Carolina 596
L122 Central Pennsylvania 493
L206 Dayton 423
L556 East Central Illinois 548
L218 East Tennessee 716
L220 Huron Valley 698
L505 Iowa 433
L230 Kalamazoo 406
L508 Kansas City 634
L419 Louisiana 506
L211 Midland 655
L422 Mississippi 550
L236 Nashville 795
L545 Oklahoma 554
L617 Oregon 457
L411 Orlando 588
L305 Princeton 564
L239 Purdue 476
L111 Rhode Island 526
L622 Richland 544
L118 Rochester 711
L624 Salt Lake 768
L447 San Antonio 512
L627 San Gorgonio 799
L435 South Carolina 758
L308 Southeastern Pennsylvania 654
L632 Southern Arizona 525
L240 St. Joseph Valley 415
L406 Tampa Bay 738
L450 Texas A&M 467
L307 Trenton 652
L205 Virginia Blue Ridge 525
L113 Western Connecticut 657
L232 Western Michigan 413
L119 Western New York 745
L536 Wisconsin 795
L112 Central New York 434
Medium Small Local Sections (200 - 399 members)
 LS_ID  Local Section # of members
L500 Ames 386
L402 Auburn 317
L404 Brazosport 258
L541 Central Arkansas 392
L641 Central Utah 213
L217 Chattanooga 239
L410 Coastal Georgia 241
L103 Cornell 259
L451 East Texas 205
L412 Eastern North Carolina 271
L114 Green Mountain 284
L317 Hampton Roads 322
L608 Hawaii 245
L518 Illinois Heartland 252
L417 Jacksonville 265
L506 Joliet 281
L228 Lexington 343
L229 Louisville 378
L105 Maine 372
L235 Memphis 364
L231 Michigan State University 361
L106 Mid-Hudson 387
L612 Montana 277
L514 Nebraska 326
L425 North Alabama 204
L427 Northeast Georgia 357
L237 Northeast Tennessee 316
L515 Northeast Wisconsin 290
L225 Northern West Virginia 229
L213 Penn-Ohio Border 204
L521 Red River Valley 224
L559 Rio Grande Valley 240
L607 San Joaquin Valley 202
L434 Savannah River 291
L524 Sioux Valley 258
L306 South Jersey 297
L448 South Texas 221
L241 Southern Indiana 209
L600 Southern Nevada 268
L121 Susquehanna Valley 291
L219 Toledo 358
L546 Tulsa 245
L531 University of Missouri 242
L530 Wakarusa Valley 289
L637 Washington-Idaho Border 227
L535 Wichita 242
Small Local Section (50-199 members)
 LS_ID  Local Section # of members
L643 Alaska 111
L100 Binghamton 173
L227 Central Ohio Valley 128
L539 Central Wisconsin 125
L116 Corning 198
L540 Decatur-Springfield 172
L208 Erie 145
L453 Heart O' Texas 163
L609 Idaho 149
L502 Illinois-Iowa 156
L209 Indiana-Kentucky Border 157
L610 Inland Northwest 123
L224 Kanawha Valley 149
L509 Kansas State University 128
L234 Kentucky Lake 187
L537 LaCrosse-Winona 136
L510 Lake Superior 142
L520 Mark Twain 98
L454 Middle Georgia 175
L423 Mobile 163
L611 Mojave Desert 176
L526 Mo-Kan-Ok, The Tri-State 132
L544 Northern Oklahoma 172
L101 Northeastern Indiana 127
L212 Northeastern Ohio 190
L110 Northern New York 142
L210 Northwest Central Ohio 117
L401 Northwest Louisiana 101
L420 Ole Miss 176
L517 Omaha 199
L430 Ouachita Valley 87
L548 Ozark 179
L549 Panhandle Plains 80
L244 Penn-York 69
L431 Pensacola 192
L550 Permian Basin 130
L547 Rock River 195
L433 Sabine-Neches 90
L629 Sierra Nevada 199
L645 Snake River 175
L525 South Central Missouri 148
L551 South Plains 154
L527 Southern Illinois 124
L416 Southwest Georgia 131
L437 Southwest Louisiana 179
L538 University of Arkansas 152
L221 Upper Ohio Valley 137
L532 Upper Peninsula 102
L243 Wabash Valley 84
L316 Western Maryland 126
L553 Wichita Falls-Duncan 107
L444 Wilson Dam 104
L223 Wooster 130
L639 Wyoming 193