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Boulder Historical Society Inc

Boulder, Colorado · EIN 84-0576359 · Arts, Culture & Humanities · tax-exempt since 1953

D

Charity Clarity grade D (score 47.8 of 100), based on the Form 990 for the year ended December 2025.

Graded against 44,780 arts, culture & humanities nonprofits with revenue $500K–$2M filing the same form. A = top 10%, B = next 20%, C = middle 40%, D = next 20%, F = bottom 10%.

What goes into the grade

MeasureThis charityScore (0–100)
ReservesMonths of spending covered by unrestricted net assets.78.6 months0
GovernanceBoard independence, key policies and audit, per the 990.100% of practices100
Margin stabilityHow steady the surplus or deficit is year to year.13
Revenue spreadHow much revenue rests on one type of income.64% from one source50
Filing recordOn-time, complete filings, year after year.100%100
Program spendingSelf-reported by the filer.77.9%not scored
Management costsShare of spending.2.2%not scored
Cost to raise $1Fundraising cost per dollar given.$0.49not scored

Scores compare this charity with its peer group; 100 is best. How Charity Clarity rates charities.

Year by year

2015201620172018202020212022202320242025grey: revenue · green: spending
Year endedFormRevenueSpendingSurplusNet assetsMonths of spendingStaffGrade
Dec 2025Form 990$893K$1.87M−$977K$12.25M78.616D
Dec 2024Form 990$698K$1.81M−$1.11M$12.65M84.115C
Dec 2023Form 990$828K$1.84M−$1.01M$13.44M87.618D
Dec 2022Form 990$1.05M$1.69M−$631K$13.86M98.716C
Dec 2021Form 990$1.25M$1.57M−$315K$15.32M117.214D
Dec 2020Form 990$347K$1.57M−$1.22M$14.69M112.316D
Dec 2018Form 990$928K$1.45M−$521K$15.04M124.517F
Dec 2017Form 990$3.36M$648K$2.71M$16.00M296.58D
Dec 2016Form 990$2.86M$492K$2.37M$12.27M299.410D
Dec 2015Form 990$2.16M$587K$1.57M$9.64M197.29F

From the organisation’s own IRS filings. “Months of spending” is total net assets divided by a month of that year’s spending. A blank grade means that year was not rated.

Read the filings

Every figure here comes from the returns this charity filed with the IRS. These sites show the full returns and more about the organisation:

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