Animal-Related (D500) IRS Verified DX Registered 990 on File

INDIANAPOLIS ZOOLOGICAL SOCIETY INC

EIN: 35-1074747 · INDIANAPOLIS, IN 46222-4552 · United States · FY 2023 Data

3 out of 5 58 / 100 Based on 2+ years of filings

Financial strength (30%) 84/100

Reliability (20%) 55/100

Effectiveness (25%) 88/100

Impact (25%) No data yet

Financial data: FY 2023 · Scored 9/13/2026

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Financial Overview — FY 2023

$50.1M

Total Revenue

$40.2M

Total Expenses

$213.5M

Net Assets

716

Employees

Revenue Sources

Expense Breakdown

Program Expense Ratio 87.5%

Fundraising Efficiency 57.6%

Operating Reserve 63.68x

Liability-to-Asset 6.0%

Revenue Diversification 54.8%

Executive Compensation $1.1M

Compared with Peers

FY 2023

Compared with 182 similar organizations (United States, Animal-Related, $10M–$100M in expenses), FY 2023.

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	87.5%	82.0%	P10P90	Top quarter
Admin expense ratio Management and general / total expenses · lower is better	8.2%	10.0%	P10P90	Above median
Fundraising expense ratio Fundraising expenses / total expenses · lower is better	4.3%	6.2%	P10P90	Above median
Fundraising efficiency Fundraising expenses / gross fundraising income · lower is better	57.6%	460.2%	P10P90	Top quarter
Operating reserve Months of expenses covered by net assets · higher is better	63.7 mo	23.1 mo	P10P90	Top quarter
Liabilities to assets Total liabilities / total assets · lower is better	6.0%	8.9%	P10P90	Above median
Revenue concentration Share of revenue from the largest source · lower is better	54.8%	73.1%	P10P90	Top quarter
Revenue growth Year over year revenue growth	18.7%	6.1%	P10P90
Expense growth Year over year expense growth	11.9%	12.7%	P10P90
Surplus margin Surplus as a share of revenue	19.6%	4.1%	P10P90

Financial History

Year	Revenue	Expenses	Net Assets	Program %	Staff
2023	$50.1M	$40.2M	$213.5M	87.5%	716
2022	$42.2M	$35.9M	$197.5M	86.7%	622
2021	$63.2M	$34.4M	N/A	—	679

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Organization Details

EIN: 35-1074747
State: IN
City: INDIANAPOLIS
ZIP: 46222-4552
Classification: D500
Category: Animal-Related
Rating: 3★
Coverage: A
Last Updated: Aug 2026
IRS Ruling Year: 1964
Foundation Code: 16
Form 990: On File

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CharityAI™ rates charities from 0 to 100 using public filings (IRS Form 990 and the equivalent registries outside the US) together with the information the charity itself provides on DonationX. Ratings are recalculated every quarter, without human bias, and shown as stars.

Four pillars

Financial strength30%

Program expense ratio, fundraising efficiency, operating reserves, liabilities and revenue diversification, compared with similar organizations.

Reliability20%

Standing with the registry, filing history, verification and how complete the profile is.

Effectiveness25%

How much goes to programs and how consistently the organization delivers them.

Impact25%

The outcomes the charity reports on DonationX: people served, cost per service and results.

Stars

★★★★★ 80–100 ★★★★☆ 60–79 ★★★☆☆ 40–59 ★★☆☆☆ 20–39 ★☆☆☆☆ 1–19

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The coverage grade (A to D) says how much filing data the score rests on; NONE means there is not enough to rate.
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