Alphabetical Index of U.S. County Dewey Decimal Numbers Independence, Missouri Midwest Genealogy Center Alphabetical Index of U.S. County Dewey Decimal Numbers State DDC Other geographical areas State DDC Other geographical areas Alabama 976.1 Nevada 979.3 Alaska 979.8 New Hampshire 974.2 Arizona 979.1 New Jersey 974.9 Delaware River Arkansas 976.7 New Mexico 978.9 California 979.4 New York 974.7 Colorado 978.8 Rocky Mountains in Colorado New York 974.72 Other parts of New York metro area Connecticut 974.6 North Carolina 975.6 Delaware 975.1 North Dakota 978.4 District of Columbia975.3 Ohio 977.1 Florida 975.9 Oklahoma 976.6 Canadian River Georgia 975.8 Chattahoochee River Oregon 979.5 Pacific Northwest; Cascade/Coast Ranges Hawaii 996.9 Pennsylvania 974.8 Susquehanna River Idaho 979.6 Rhode Island 974.5 Illinois 977.3 South Carolina 975.7 Indiana 977.2 South Dakota 978.3 Iowa 977.7 Des Moines River Tennessee 976.8 Tennessee River and Valley Kansas 978.1 Arkansas River in Kansas Texas 976.4 Brazos, Colorado Rivers Kentucky 976.9 Utah 979.2 Louisiana 976.3 Vermont 974.3 Green Mountains Maine 974.1 Virginia 975.5 Blue Ridge Maryland 975.2 Potomac River Washington 979.7 Columbia River Massachusetts 974.4 West Virginia 975.4 Michigan 977.4 Lakes Huron, Michigan Wisconsin 977.5 Wisconsin River Minnesota 977.6 Wyoming 978.7 Mississippi 976.2 Missouri 977.8 Missouri River in Missouri Montana 978.6 Missouri River in Montana Nebraska 978.2 Platte River Midwest Genealogy Center Alphabetical Index of U.S. County Dewey Decimal Numbers County State DDC Other geographical areas Abbeville County South Carolina 975.735 Acadia Parish Louisiana 976.356 Accomack County Virginia 975.516 Ada County Idaho 979.628 Boise Adair County Iowa 977.773 Adair County Kentucky 976.9675 Adair County Missouri 977.8264 Adair County Oklahoma 976.689 Adams County Colorado 978.881 Adams County Idaho 979.626 Adams County Illinois 977.344 Adams County Indiana 977.273 Adams County Iowa 977.776 Adams County Mississippi 976.226 Natchez Adams County Nebraska 978.2397 Adams County North Dakota 978.489 Adams County Ohio 977.186 Adams County Pennsylvania 974.842 Adams County Washington 979.734 Adams County Wisconsin 977.556 Addison County Vermont 974.35 Aiken County South Carolina 975.775 Aitkin County Minnesota 977.672 Alachua County Florida 975.979 Alamance County North Carolina 975.658 Alameda County California 979.465 Alameda County California 979.466 Oakland Alameda County California 979.467 Berkeley Page 1 of 144 Midwest Genealogy Center Alphabetical Index of U.S. County Dewey Decimal Numbers County State DDC Other geographical areas Alamosa County Colorado 978.836 Albany County New York 974.742 Albany County New York 974.743 Albany Albany County Wyoming 978.795 Albemarle County Virginia 975.5482 Albemarle County and environs Virginia 975.548 Albemarle County and environs Virginia 975.5481 Independent city of Charlottesville Alcona County Michigan 977.479 Alcorn and Tishomingo Counties Mississippi 976.299 Alcorn County Mississippi 976.2993 Alexander County Illinois 977.3999 Alexander County North Carolina 975.6795 Alfalfa County Oklahoma 976.622 Alger and Schoolcraft Counties Michigan 977.493 Alger County Michigan 977.4932 Allamakee County Iowa 977.733 Allegan County Michigan 977.414 Allegany County Maryland 975.294 Allegany County New York 974.784 Alleghany and Ashe Counties North Carolina 975.683 Alleghany County North Carolina 975.6832 Alleghany County Virginia 975.5816 Alleghany County and environs Virginia 975.581 Alleghany County and environs Virginia 975.5811 Independent city of Clifton Forge Alleghany County and environs Virginia 975.5812 Independent city of Covington Allegheny County Pennsylvania 974.885 Allegheny County Pennsylvania 974.886 Pittsburgh Allegheny Crest counties West Virginia 975.48 Allegheny Mountains in West Virginia; Cheat River Page 2 of 144 Midwest Genealogy Center Alphabetical Index of U.S. County Dewey Decimal Numbers County State DDC Other geographical areas Allen and Simpson Counties Kentucky 976.973 Allen County Indiana 977.274 Fort Wayne Allen County Kansas 978.194 Allen County Kentucky 976.9732 Allen County Ohio 977.142 Allen Parish Louisiana 976.358 Allendale County South Carolina 975.777 Alpena County Michigan 977.481 Alpine County California 979.443 Amador County California 979.442 Amelia County Virginia 975.5634 Amherst County Virginia 975.5496 Amite County Mississippi 976.224 Anderson and Johnson Counties Kansas 978.167 Anderson and Woodford Counties Kentucky 976.946 Anderson County Kansas 978.1672 Anderson County Kentucky 976.9463 Anderson County South Carolina 975.725 Anderson County Tennessee 976.873 Clinch River Anderson County Texas 976.4229 Andrew County Missouri 977.8126 Andrews County Texas 976.4856 Androscoggin County Maine 974.182 Angelina County Texas 976.4173 Anne Arundel County Maryland 975.255 Anne Arundel County Maryland 975.256 Annapolis Anne Arundel County Maryland 975.26 Independent city of Baltimore Anoka County Minnesota 977.665 Page 3 of 144 Midwest Genealogy Center Alphabetical Index of U.S. County Dewey Decimal Numbers County State DDC Other geographical areas Anson and Union Counties North Carolina 975.675 Anson County North Carolina 975.6753 Antelope County Nebraska 978.255 Antrim County Michigan 977.485 Apache County Arizona 979.137 Petrified Forest National Park Appanoose County Iowa 977.789 Appling County Georgia 975.8784 Appomattox County Virginia 975.5625 Aransas County Texas 976.4122 Arapahoe County Colorado 978.882 Archer County Texas 976.4543 Archuleta County Colorado 978.832 Arenac County Michigan 977.473 Arkansas County Arkansas 976.786 Arlington County Virginia 975.5295 Arlington County Virginia 975.5296 Independent city of Alexandria Armstrong County Pennsylvania 974.888 Armstrong County Texas 976.4833 Aroostook County Maine 974.11 Arthur County Nebraska 978.2785 Ascension Parish Louisiana 976.319 Ashe County North Carolina 975.6835 Ashland County Ohio 977.129 Ashland County Wisconsin 977.521 Ashley County Arkansas 976.783 Ashtabula County Ohio 977.134 Asotin County Washington 979.742 Assumption Parish Louisiana 976.343 Page 4 of 144 Midwest Genealogy Center Alphabetical Index of U.S. County Dewey Decimal Numbers County State DDC Other geographical areas Atascosa County Texas 976.4443 Atchison and Holt Counties Missouri 977.811 Atchison County Kansas 978.136 Atchison County Missouri 977.8113 Athens County Ohio 977.197 Hocking River Atkinson County Georgia 975.8822 Atkinson, Coffee, Jeff Davis Counties Georgia 975.882 Atlanta Georgia 975.8231 Atlantic County New Jersey 974.984 Atlantic County New Jersey 974.985 Atlantic City Atoka County Oklahoma 976.666 Attala County Mississippi 976.2644 Audrain and Callaway Counties Missouri 977.833 Audrain County Missouri 977.8332 Audubon County Iowa 977.7486 Auglaize County Ohio 977.143 Augusta County Virginia 975.5916 Augusta County and environs Virginia 975.591 Augusta County and environs Virginia 975.5911 Independent city of Staunton Augusta County and environs Virginia 975.5912 Independent city of Waynesboro Aurora County South Dakota 978.3375 Austin County Texas 976.4252 Austin-San Antonio region Texas 976.43 Autauga and Lowndes Counties Alabama 976.146 Autauga County Alabama 976.1463 Avery and Mitchell Counties North Carolina 975.686 Avery County North Carolina 975.6862 Avoyelles Parish Louisiana 976.371 Page 5 of 144 Midwest Genealogy Center Alphabetical Index of U.S. County Dewey Decimal Numbers County State DDC Other geographical areas Baca County Colorado 978.899 Bacon County Georgia 975.8787 Badlands counties North Dakota 978.49 Bailey County Texas 976.4844 Baker County Florida 975.913 Baker County Georgia 975.8967 Baker County Oregon 979.575 Baldwin and Putnam Counties Georgia 975.857 Baldwin County Alabama 976.121 Perdido River Baldwin County Georgia 975.8573 Ballard County Kentucky 976.996 Baltimore County Maryland 975.271 Baltimore, Independent City of Maryland 975.26 Bamberg County South Carolina 975.778 Bandera County Texas 976.4885 Banks and Jackson Counties Georgia 975.814 Banks County Georgia 975.8143 Banner County Nebraska 978.2975 Bannock County Idaho 979.647 Baraga and Iron Counties Michigan 977.497 Baraga County Michigan 977.4973 Barber County Kansas 978.182 Barbour County Alabama 976.132 Barbour County West Virginia 975.459 Barnes County North Dakota 978.432 Barnstable County (Cape Cod) Massachusetts 974.492 Barnwell County South Carolina 975.776 Barren County Kentucky 976.972 Page 6 of 144 Midwest Genealogy Center Alphabetical Index of U.S. County Dewey Decimal Numbers County State DDC Other geographical areas Barron County Wisconsin 977.518 Barrow County Georgia 975.8195 Barry County Michigan 977.416 Barry County Missouri 977.876 Bartholomew County Indiana 977.224 Barton County Kansas 978.152 Barton County Missouri 977.871 Bartow County Georgia 975.8365 Basin and Range region counties New Mexico 978.96 Rio Grande in New Mexico Bastrop County Texas 976.432 Bates County Missouri 977.843 Bath County Kentucky 976.9555 Bath County Virginia 975.587 Baxter County Arkansas 976.721 Bay County Florida 975.995 Bay County Michigan 977.447 Saginaw River; Saginaw Bay Bayfield County Wisconsin 977.513 Baylor County Texas 976.4744 Beadle County South Dakota 978.3274 Bear Lake County Idaho 979.644 Wasatch Range in Idaho Beaufort County North Carolina 975.6186 Beaufort County South Carolina 975.799 Sea Islands Beauregard Parish Louisiana 976.359 Beaver County Oklahoma 976.614 Beaver County Pennsylvania 974.892 Beaver County Utah 979.246