Charity Search / FRIENDS OF MIRROR LAKE STATE PARK
Environment (C30) 990 on File

FRIENDS OF MIRROR LAKE STATE PARK

EIN: 37-1439852 · BARABOO, WI 53913-9341 · United States · FY 2025 Data
3 out of 5 51 / 100 Based on 2+ years of filings
Financial strength (30%) 83/100
Reliability (20%) 55/100
Effectiveness (25%) 61/100
Impact (25%) No data yet
Financial data: FY 2025 · Scored 9/13/2026
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Financial Overview — FY 2025
$92K
Total Revenue
$71K
Total Expenses
$159K
Net Assets
N/A
Employees
Revenue Sources
Expense Breakdown
Program Expense Ratio 78.2%
Fundraising Efficiency 56.6%
Operating Reserve 26.79x
Liability-to-Asset 0.5%
Revenue Diversification 21.5%
Compared with Peers
FY 2025
Compared with 1,583 similar organizations (United States, Environment, under $100K in expenses), FY 2025.
This organization Middle half of peers (P25–P75) Peer median
Ratio This org Peer median Position (P10 → P90)
Program expense ratio
Program expenses / total expenses · higher is better
78.2% 82.3%
P10P90
Below median
Fundraising efficiency
Fundraising expenses / gross fundraising income · lower is better
56.6% 31.7%
P10P90
Below median
Operating reserve
Months of expenses covered by net assets · higher is better
26.8 mo 33.3 mo
P10P90
Below median
Liabilities to assets
Total liabilities / total assets · lower is better
0.5% 0.0%
P10P90
Bottom quarter
Revenue concentration
Share of revenue from the largest source · lower is better
21.5% 92.5%
P10P90
Top quarter
Revenue growth
Year over year revenue growth
-4.1% -1.3%
P10P90
Expense growth
Year over year expense growth
-9.6% -1.0%
P10P90
Surplus margin
Surplus as a share of revenue
22.9% 15.3%
P10P90
Financial History
Year Revenue Expenses Net Assets Program % Staff
2025 $92K $71K $159K 78.2% —
2024 $96K $79K $138K 79.3% —
2023 $63K $105K $120K 86.5% —
2022 $81K $54K $162K 91.6% —
2021 $93K $45K N/A — 1
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Organization Details
EIN
37-1439852
State
WI
City
BARABOO
ZIP
53913-9341
Classification
C30
Category
Environment
Rating
3★
Coverage
A
Last Updated
Aug 2026
Form 990
On File
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