Mount Washington Observatory

Mount Washington Observatory is a scientific organization in North Conway, New Hampshire. Its tax id (EIN) is 02-0225135. It was granted tax-exempt status by IRS in October, 1951. For detailed information such as income and other financial data of Mount Washington Observatory, refer to the following table.


Profile of Mount Washington Observatory

Organization Name Mount Washington Observatory
Tax Id (EIN)02-0225135
Address Po Box 2310, North Conway, NH 03860-2310
All tax-exempt organizations in zip code 03860
Tax PeriodAssetIncomeRevenue
April, 2013$5,361,202$2,357,079$2,140,874
April, 2014$5,969,672$2,703,039$2,517,817
April, 2015$5,981,643$2,098,990$1,928,761
April, 2016$5,342,115$1,952,176$1,749,337
April, 2017$5,318,694$1,966,904$1,788,138
April, 2018$5,250,300$2,043,421$1,829,449
April, 2019$4,920,610$1,805,431$1,628,495
April, 2020$4,445,440$1,966,056$1,793,337
April, 2021$5,276,447$1,770,209$1,756,723
March, 2022$5,678,223$2,438,655$2,100,919
March, 2023$9,906,612$6,655,638$6,202,733
March, 2024$10,366,791$2,956,457$2,603,845
IRS Exempt Status Ruling Date October, 1951
Exempt Status Unconditional Exemption
Deductibility Contributions are deductible
Tax Exempt Classification Science and Technology Research Institutes, Services
Tax Exempt Activity Astronomy
NTEE CodeU31
Organization's purposes,
activities, & operations
Scientific research (diseases)
(note: this activity classification has been replaced by the Tax Exempt Classification shown above since 1995.)
Foundation Type Organization that normally receives no more than one-third of its support from gross investment income and unrelated business income and at the same time more than one-third of its support from contributions, fees, and gross receipts related to exempt purposes. 509(a)(2)
Organization Type Corporation
Organization Classification Scientific Organization
Affiliation Independent - This organization is an independent organization or an independent auxiliary (i.e., not affiliated with a National, Regional, or Geographic grouping of organizations).
Primary Return(s) Required to File 990 (all other) or 990EZ return
Private Foundation Filing Requirement No need to 990-PF return
Asset Range Reported on Form 990$10,000,000 to 49,999,999
Income Range Reported on Form 990$1,000,000 to 4,999,999
Accounting Period 03