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Organization	Location	Revenue	Expenses	Assets	Program	Fundr. cost	Employees	Type
Preservation Society of Newport County To protect, preserve, and present an exceptional collection of house museums and landscapes. 05-0252708 · FY2024	Newport, RI	$44.0M	$31.7M	$105.7M	82%	6%	365	501(c)(3)
Childrens Museum of Sonoma County To inspire curiosity and creativity through joyful, transformative experiences. 20-3496878 · FY2024	Santa Rosa, CA	$4.7M	$2.9M	$8.4M	71%	11%	55	501(c)(3)
Sumter Museum Operation of county MUSEUM and preservation of MUSEUM assets 57-0891753 · FY2024	Sumter, SC	$3.7M	$861.6K	$7.0M	46%	9%	—	501(c)(3)
Newport Historical Society To preserve the history of NEWPORT county- maintain historic collections- provide quality educational programs 05-0264532 · FY2024	Newport, RI	$2.9M	$2.0M	$9.6M	59%	0%	35	501(c)(3)
Nassau County Museum of Art The Museum's mission is to encourage and promote the appreciation of fine art to people in its surrounding… 11-2949583 · FY2023	Roslyn Harbor, NY	$2.4M	$2.4M	—	78%	10%	43	501(c)(3)
Monroe County Historical Society INC To collect, preserve, research, interpret and exhibit the history and artifacts of MONROE COUNTY. 23-7313245 · FY2024	Bloomington, IN	$677.4K	$655.9K	$7.6M	80%	4%	10	501(c)(3)
Suffolk County Historical Society The SOCIETY provides eduational programs, a museum, and a library for the benefit of students, researchers… 11-1700962 · FY2024	Riverhead, NY	$490.1K	$588.7K	$2.2M	81%	3%	13	501(c)(3)
Nevada County Historical Society To preserve landmarks and objects of local historic interest-educational 94-6103014 · FY2024	Nevada City, CA	$419.0K	$183.2K	$1.3M	87%	0%	—	501(c)(3)
Crook County Museum District Encourage, promote, correlate and cooperate in research, exhibition, and display of historical items in CROOK… 20-8003117 · FY2023	Sundance, WY	$415.9K	$370.0K	$1.3M	88%	0%	6	501(c)(3)
Archer County Museum & Arts Center INC Educate current and future generations by the preservation of historically and scientifically significant… 84-4925369 · FY2024	Archer City, TX	$400.4K	$255.2K	$186.6K	100%	0%	—	501(c)(3)
Armstrong County Museum To capture the rich heritage of ARMSTRONG COUNTY and celebrate IT through cultural and educational… 75-2341811 · FY2024	Claude, TX	$382.9K	$104.2K	$929.9K	58%	20%	3	501(c)(3)
Monroe County Heritage Museum INC To bring people and history together - first hand experience observing well presented displays designed to… 63-1085886 · FY2024	Monroeville, AL	$348.6K	$307.8K	$981.9K	96%	0%	—	501(c)(3)
Friends of Nassau County Bailey Arboretum To encourage and assist in the development and promotion of the art and science of horticulture in the COUNTY… 51-0190936 · FY2024	Locust Valley, NY	$340.1K	$352.4K	$2.5M	80%	4%	5	501(c)(3)
Plymouth County Historical Museum To preserve PLYMOUTH county's heritage and history 42-0924381 · FY2024	Le Mars, IA	$305.4K	$173.2K	$1.0M	100%	0%	7	501(c)(3)
Barnes County Historical Society INC To collect, maintain, display artifacts 45-0331075 · FY2024	Valley City, ND	$285.2K	$164.5K	$539.1K	100%	0%	5	501(c)(3)
Island County Historical Society Mission has been dedicated to the collection, preservation, and interpretation of Island Countys rich and… 91-6071155 · FY2024	Coupeville, WA	$283.6K	$268.1K	$1.1M	39%	2%	7	501(c)(3)
Dickinson County Historical Society and Museum INC Establish and preserve the DICKINSON COUNTY historcial MUSEUM to inspire people to learn through public… 42-1070010 · FY2025	Spirit Lake, IA	$228.1K	$106.2K	$301.9K	96%	0%	4	501(c)(3)
South Boston-Halifax County Museum of Fine Arts and History The museum is operated for the collection, exhibition and preservation of antiques, works of art, books and… 54-1172219 · FY2024	South Boston, VA	$185.1K	$183.9K	$2.8M	74%	0%	—	501(c)(3)
Bedford Museum and Genealogical Library To develop and maintain files for GENEALOGICAL and historical research and to collect, preserve and interpret… 52-1316083 · FY2024	Bedford, VA	$161.1K	$144.7K	$826.1K	62%	3%	5	501(c)(3)
Luna County Historical Society INC Maintain and develop museum to preserve the history of the local area 85-0254830 · FY2024	Deming, NM	$149.2K	$143.0K	$695.3K	100%	0%	—	501(c)(3)
Russell County Historical Society Operation of public museums and entities 48-6111608 · FY2024	Russell, KS	$138.1K	$52.4K	$1.6M	100%	0%	—	501(c)(3)
Dakotaland Museum The organization is dedicated to preserving, restoring and educating others about the history of the region. 46-0391895 · FY2024	Huron, SD	$135.1K	$74.7K	$679.7K	84%	0%	—	501(c)(3)
Louisa County Historical Society The Society seeks to preserve and present the history of Louisa County, Virginia. The Society operates a… 23-7058587 · FY2024	Louisa, VA	$134.7K	$160.2K	$501.4K	72%	7%	7	501(c)(3)
Hardeman County Museum & Historical Society 75-1794959 · FY2021	Quanah, TX	$132.5K	—	$0	—	—	—	501(c)(3)
Dorchester County Historical To operate and maintain a museum dedicated to the history and culture of the surrounding community. The… 23-7222855 · FY2024	Cambridge, MD	$124.9K	$184.6K	$1.0M	100%	0%	3	501(c)(3)
Essex County Museum and Historical Society INC Research and preserve history of Essex County Virginia and provide displays, presentations and publications… 54-1818556 · FY2024	Tappahannock, VA	$122.8K	$154.0K	$824.5K	19%	14%	2	501(c)(3)
Livingston County Historical Society Preservation of COUNTY history and the COUNTY museum. 16-6049755 · FY2024	Geneseo, NY	$116.6K	$143.6K	$574.5K	100%	0%	2	501(c)(3)
Lander County Historical Society and Museum INC The primary exempt purpose is to provide a MUSEUM which incorporates history and heritage of the surrounding… 88-0266084 · FY2024	Battle Mtn, NV	$93.3K	—	$102.9K	—	—	—	501(c)(3)
The Conservation Society of York County Education and preservation of local historic sites 23-1578713 · FY2024	Windsor, PA	$90.9K	$78.0K	$1.2M	63%	0%	—	501(c)(3)
Henry County Historical Society Museum established to preserve historical articles & display to the public 36-2793910 · FY2024	Bishop Hill, IL	$85.7K	$29.1K	$1.2M	0%	0%	—	501(c)(3)
Harrison County Historical Society To provide and maintain a museum dedicated to local history. 75-1223754 · FY2024	Marshall, TX	$78.8K	$195.1K	$1.2M	100%	0%	4	501(c)(3)
Presque Isle County Historical Museum 38-2051983 · FY2024	Rogers City, MI	$76.4K	—	$0	—	—	—	501(c)(3)
Pioneer City County Museum 75-1378561 · FY2023	Sweetwater, TX	$73.0K	—	$56.8K	—	—	—	501(c)(3)
Island Park Preservation Society 83-1056170 · FY2024	Portsmouth, RI	$70.6K	—	$11.6K	—	—	—	501(c)(3)
Graham County Auto and Art Museum 81-4893175 · FY2024	Hill City, KS	$70.2K	—	$252.1K	—	—	—	501(c)(3)
Edgar County Historical Society Operating of a local area HISTORICAL museum for the preservation of area history. 23-7213248 · FY2023	Paris, IL	$62.5K	$71.2K	$546.8K	88%	0%	—	501(c)(3)
Floyd County Historical Museum To preserve the history of the region 23-7167313 · FY2024	Floydada, TX	$53.9K	$73.0K	$1.0M	100%	0%	2	501(c)(3)
Heritage Museum of Roberts County 46-0404911 · FY2024	Sisseton, SD	$52.7K	—	$233.1K	—	—	—	501(c)(3)
Helena Museum of Phillips County INC To preserve and promote the heritage, history and culture of PHILLIPS COUNTY, ar, and the delta region. 46-3581169 · FY2024	Helena, AR	$52.1K	$102.6K	$1.8M	36%	0%	1	501(c)(3)

2,046,138

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212,946

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12,515,252

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22,549,931

directors

214,365

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Public data from IRS Form 990 e-file & Business Master File. A 990 shows reported financial activity, not measured program outcomes. Assets are from the IRS BMF and may lag the latest filing; fundraising cost is fundraising expenses as a share of total expenses. · philanthropy.org