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Maryland · NTEE D

Animal-Related Nonprofits in Maryland

Givalgo Discover indexes 50 active animal-related nonprofits headquartered in Maryland. The list below is sorted by reported revenue on the most recent Form 990 indexed for each organisation.

Top 50 by reported revenue

From the most recent Form 990 indexed for each organisation. Click an org for full diligence detail.

#OrganisationRevenue
1HUMANE WORLD FOR ANIMALS INC
EIN 53-0225390
$207.9M
2NATIONAL AQUARIUM INC
EIN 52-1121163
$74.4M
3THE MARYLAND ZOOLOGICAL SOCIETY INC
EIN 52-0996352
$28.2M
4THE HUMANE LEAGUE
EIN 04-3817491
$27.9M
5ALLEY CAT ALLIES INCORPORATED
EIN 52-1742079
$22.3M
6AMERICAN ASSOCIATION OF ZOOLOGICAL PARKS AND AQUARIUMS INC
EIN 55-0526930
$20.9M
7GENTLE GIANTS DRAFT HORSE RESCUE SOCIETY LTD
EIN 59-3822764
$9.3M
8AAALAC INTERNATIONAL INC
EIN 36-2549660
$9.3M
9MARYLAND SPCA INC
EIN 52-6001558
$8.3M
10ROMANIAN LEAGUE IN DEFENSE OF ANIMA LS
EIN 32-0176929
$7.3M
11BALTIMORE ANIMAL RESCUE AND CARE SHELTER INC
EIN 86-1130456
$6.8M
12LAST CHANCE ANIMAL RESCUE INC
EIN 52-2328626
$6.7M
13AMERICAN FISHERIES SOCIETY INC
EIN 54-0683803
$6.1M
14CENTER FOR A HUMANE ECONOMY INC
EIN 83-2620507
$3.9M
15HUMANE SOCIETY OF WASHINGTON COUNTY INCORPORATED
EIN 52-0542025
$3.7M
16MONTGOMERY COUNTY HUMANE SOCIETY INC
EIN 52-6044968
$3.6M
17DAYS END FARM HORSE RESCUE INC
EIN 52-1759077
$3.5M
18WILDLIFE HABITAT COUNCIL INC
EIN 52-1558579
$3.5M
19ALLEY CAT RESCUE INC
EIN 52-2279100
$3.3M
20HUMANE SOCIETY OF BALTIMORE COUNTY INC
EIN 52-0623165
$3.2M
21HART FOR ANIMALS INC
EIN 82-0584608
$2.7M
22HUMANE SOCIETY OF HARFORD COUNTY INC
EIN 52-0567970
$2.7M
23SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS OF A A CO MD IN
EIN 52-0609154
$2.6M
24BORN FREE USA UNITED WITH ANIMAL PROTECTION INSTITUTE
EIN 94-6187633
$2.6M
25GLOBAL WILDLIFE TRUST INC
EIN 20-1935855
$2.4M
26MONTGOMERY COUNTY SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS I
EIN 23-7428285
$2.4M
27SECOND CHANCE WILDLIFE CENTER INC
EIN 52-1927600
$2.3M
28WATERFOWL FESTIVAL INC
EIN 23-7801345
$2.2M
29NATIONAL AQUARIUM FOUNDATION INC
EIN 52-1301162
$2.1M
30PLUMPTON PARK ZOOLOGICAL GARDENS INC
EIN 52-1548155
$1.9M
31MARYLAND HORSE BREEDERS ASSOCIATION INC
EIN 52-0580070
$1.8M
32ANIMAL OUTLOOK INC
EIN 52-2034417
$1.8M
33HUMANE SOCIETY OF CARROLL CO INC
EIN 52-0689149
$1.8M
34TALBOT HUMANE CO
EIN 52-0636395
$1.7M
35HUMANE SOCIETY OF WICOMICO COUNTY INC
EIN 23-7015204
$1.7M
36FERRY COVE SHELLFISH INC
EIN 84-4611271
$1.5M
37HUMANE SOCIETY OF KENT COUNTY INCORPORATED
EIN 52-0796950
$1.5M
38ANIMALS ANGELS INCORPORATED
EIN 20-8780367
$1.4M
39RUDE RANCH ANIMAL RESCUE INC
EIN 52-2312763
$1.4M
40UNITED SPAY ALLIANCE
EIN 47-2598654
$1.3M
41PATUXENT ANIMAL WELFARE SOCIETY
EIN 52-2001456
$1.3M
42WILDFOWL TRUST OF NORTH AMERICA INC
EIN 52-1188939
$1.2M
43COMPANIONS AND ANIMALS FOR REFORM AND EQUITY INC
EIN 85-0557068
$1.1M
44WORCESTER COUNTY HUMANE SOCIETY INCORPORATED
EIN 52-1122738
$1.0M
45LAB RESCUE OF LRCP INCORPORATED
EIN 52-1880024
$988K
46POPLAR SPRING ANIMAL SANCTUARY INC
EIN 52-1970569
$952K
47ALLEGANY COUNTY ANIMAL SHELTER MANAGEMENT FOUNDATION
EIN 52-2292769
$853K
48CENTRE FOR WILDLIFE STUDIES INC
EIN 84-3990793
$837K
49SMALL MIRACLES CAT AND DOG RESCUE INC
EIN 20-4323931
$828K
50CAROLINE COUNTY HUMANE SOCIETY INC
EIN 52-1528421
$810K

Frequently asked questions about animal-related nonprofits in Maryland

Answers compiled from the IRS Form 990, BMF, Pub 78, and Auto-Revocation List.

How many animal-related nonprofits operate in Maryland?
Every IRS-registered animal-related nonprofit in Maryland appears in the Givalgo Discover index. The top 50 by reported revenue are listed on this page; the full set is searchable on discover.givalgo.ai.
What's the largest animal-related nonprofit in Maryland?
The single largest animal-related nonprofit in Maryland by reported total revenue is shown at the top of the list on this page, sourced from each organisation's most recent IRS Form 990 filing.
How do I vet a animal-related nonprofit in Maryland before donating?
Use Givalgo Discover's free profile for the organisation: it cross-references the IRS Auto-Revocation List, IRS Publication 78, and the IRS Business Master File, and exposes the latest Form 990 financials and governance signals on a single page.
Are donations to Maryland animal-related nonprofits tax-deductible?
Federal deductibility is determined by IRS Publication 78 status, not state location. Donations to a Pub 78-listed animal-related nonprofit in Maryland are tax-deductible at the federal level; Maryland state tax treatment may differ.
Where do animal-related nonprofits in Maryland file their Form 990?
All US tax-exempt organisations file Form 990 with the IRS at the federal level — there is no state-specific filing for the federal exemption itself. Maryland state charity registration is a separate state-level requirement.