Charity Search / ALDO LEOPOLD NATURE CENTER INC
Environment (C600) IRS Verified DX Registered 990 on File

ALDO LEOPOLD NATURE CENTER INC

EIN: 39-1786897 · MONONA, WI 53716-3716 · United States · FY 2024 Data
3 out of 5 59 / 100 Based on 2+ years of filings
Financial strength (30%) 81/100
Reliability (20%) 55/100
Effectiveness (25%) 100/100
Impact (25%) No data yet
Financial data: FY 2024 · Scored 9/13/2026
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CharityAI™ Score
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Mission Statement

The Aldo Leopold Nature Center (ALNC), established in 1994, is an independent, non-profit organization with the mission to engage and educate current and future generations, empowering them to respect, protect and enjoy the natural world. Guided by Aldo Leopold’s land ethic, our vision is that: Engaged, educated and empowered people take action to protect the natural world and create healthy and sustainable communities.

Financial Overview — FY 2024
$3.8M
Total Revenue
$2.3M
Total Expenses
$6.0M
Net Assets
68
Employees
Revenue Sources
Expense Breakdown
Program Expense Ratio 76.5%
Fundraising Efficiency 2026.2%
Operating Reserve 30.91x
Liability-to-Asset 7.3%
Revenue Diversification 71.3%
Executive Compensation $226K
Compared with Peers
FY 2024
Compared with 1,437 similar organizations (United States, Environment, $1M–$10M in expenses), FY 2024.
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
76.5% 82.0%
P10P90
Below median
Admin expense ratio
Management and general / total expenses · lower is better
15.9% 12.3%
P10P90
Below median
Fundraising expense ratio
Fundraising expenses / total expenses · lower is better
7.7% 3.8%
P10P90
Below median
Fundraising efficiency
Fundraising expenses / gross fundraising income · lower is better
2026.2% 334.8%
P10P90
Bottom quarter
Operating reserve
Months of expenses covered by net assets · higher is better
30.9 mo 13.3 mo
P10P90
Above median
Liabilities to assets
Total liabilities / total assets · lower is better
7.3% 8.5%
P10P90
Above median
Revenue concentration
Share of revenue from the largest source · lower is better
71.3% 90.7%
P10P90
Top quarter
Revenue growth
Year over year revenue growth
121.5% 11.6%
P10P90
Expense growth
Year over year expense growth
0.3% 12.9%
P10P90
Surplus margin
Surplus as a share of revenue
39.1% 4.5%
P10P90
Financial History
Year Revenue Expenses Net Assets Program % Staff
2024 $3.8M $2.3M $6.0M 76.5% 68
2023 $1.7M $2.3M $4.5M 77.0% 67
2022 $2.0M $2.2M $5.1M 75.8% 69
2021 $2.4M $1.8M $5.3M 72.0% 56
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Organization Details
EIN
39-1786897
State
WI
City
MONONA
ZIP
53716-3716
Classification
C600
Category
Environment
Rating
3★
Coverage
A
Last Updated
Aug 2026
IRS Ruling Year
1994
Foundation Code
15
Form 990
On File
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