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PeerBasis
Compensation Comparability Determination

Lombard Historical Society

Executive Director / CEO

EIN 237114585
IL · NTEE A82Z
FY ending 2023-12-31
June 9, 2026

This analysis benchmarks the total compensation of Alison, Executive Director / CEO ($53,045) against every comparable organization that fit the selection criteria — 90 in total — drawn systematically from IRS Form 990 filings, not a hand-picked subset.

Compensation sits at approximately the 50th percentile of comparable organizationswithin the typical range

Benchmarked executive: Alison — reported title “COSTANZO”, selected as the organization's highest-paid individual — no exact title match, so confirm this is a comparable role.

How comparable organizations were selected

90 organizations qualified on sector, size, and geography 90 within the band form the benchmarked peer set.

Distribution of comparable compensation

$1,400 total compensation of comparable organizations → $155,972 $53,045
$20,36710th
$35,26325th
$53,364Median
$69,48675th
$85,82790th
$53,045This org · 50th
p10$20,367
p25$35,263
p50$53,364
p75$69,486
p90$85,827
$53,045

Comparable organizations

Each figure is Form 990 Part VII columns D + F (reportable pay plus other compensation and benefits; column F may include amounts from related organizations), normalized to IL cost of living (BEA RPP, 2023) and to its filing year (CPI-U); the reported amount is on each linked 990.

OrganizationStateRevenueMatched titleComp
(reported)
Comp
(adjusted)
FY
Lakewood Historical Society OH$249,834 Executive Di $67,600 $68,915 2025
West Des Moines Historical Society IA$247,603 Executive Di $52,986 $57,320 2024
Friends Of Clermont Inc NY$250,561 Executive Di $3,432 $3,064 2024
Schoharie County Historical Society NY$245,308 Curator $64,789 $57,842 2024
Colonial Pennsylvania Farmstead PA$244,925 Vice President $1,841 $1,867 2023
Rangeley Lakes Region Historical Society ME$254,765 Executive Director $85,828 $84,911 2024
Furnace Town Foundation Inc MD$256,119 Executive Di $59,289 $54,764 2024
Lelooska Foundation WA$241,645 President $12,253 $10,838 2024
Mount Gulian Society NY$256,383 Executive Di $97,804 $89,896 2023
Rocky Mount Historical Association TN$256,386 Executive Director $69,271 $74,064 2023
Crawford County Historical Society PA$239,650 Executive Director $35,907 $36,423 2023
120 East State NJ$259,821 Project Leader $97,240 $85,777 2024
Garfield Heritage Society IL$236,787 Executive Director $3,338 $3,242 2024
Historic Preservation Trust Of PA$235,874 Director $1,380 $1,400 2023
Milton Historical Society WI$235,066 Executive Director $43,160 $45,849 2023
Umatilla County Historical Society OR$263,172 Executive Direc $37,867 $34,743 2024
Harrisonburg-rockingham Historical VA$234,085 Executive Director $65,025 $62,030 2024
Geneva Historical Society IL$233,566 Executive Dir. $74,888 $72,739 2024
Washington County Historical MD$231,361 Executive Di $30,601 $28,265 2024
Berea Historical Society OH$230,863 Key Employee $9,894 $10,353 2024
Nittany Antique Machinery Association PA$268,569 Secretary $2,400 $2,364 2024
Kankakee County Historical Society IL$227,254 Executive Dir. $50,594 $49,142 2024
Leelanau Historical Society MI$270,796 Executive Dir. $37,577 $39,452 2023
American Society Of Church History MN$274,036 Executive Se $25,000 $25,127 2023
Montgomery County Historical NY$223,779 Executive Di $29,955 $26,743 2024

Comp (reported) is the figure on each organization's Form 990 (columns D + F); Comp (adjusted) normalizes it to IL cost of living and 2023 dollars. Click any organization to verify the figure on ProPublica.

Methodology

Comparable organizations were drawn from electronically filed IRS Form 990 returns and matched on sector (NTEE code), budget (a size-adaptive revenue band that tightens as the organization grows), and geography (same-state first, broadening only when too few peers qualify); every organization within the band forms the peer set. To compare fairly across regions and years, peer compensation is normalized to IL cost of living (BEA Regional Price Parities, 2023) and to the subject's filing year (CPI-U). The figure benchmarked is Form 990 Part VII, Section A, columns D + F — reportable pay plus other compensation, benefits, and deferred amounts (column F may include amounts from related organizations) — with the chief executive matched by role. Related-organization amounts (column E) and institutional trustees are excluded. Full methodology: peerbasis.org/methodology.

Sample, role match & sensitivity

Sensitivity — the subject's percentile under alternative compensation definitions:

BasisSubject percentile
Total compensation (D + F), cost-of-living + inflation adjusted — the PeerBasis default50th
Total compensation (D + F), as reported (no adjustments)49th
Reportable pay only (column D), adjusted51st
All sources (D + E + F), adjusted49th

If the percentile moves materially across these definitions, the result is sensitive to methodology choices, and the board should weigh which basis best fits its facts.

Rebuttable presumption of reasonableness · 26 CFR 53.4958-6

Compensation paid by a tax-exempt organization is presumed reasonable — shifting the burden to the IRS — when three requirements are met. This report supplies the comparability data for the second. The board should record the following in its minutes concurrently with its decision:

Draft board minutes — executive compensation

  1. The compensation of the Executive Director / CEO (Alison) was approved in advance by [the Board / Compensation Committee], composed of members with no conflict of interest with respect to the arrangement.
  2. Prior to its determination, the authorized body obtained and relied upon appropriate comparability data, namely the PeerBasis Compensation Comparability Determination dated June 9, 2026, comparing compensation against 90 similarly situated organizations (Same NTEE sector (A82), nationwide + budget 0.67–1.5× revenue).
  3. The authorized body determined that total compensation of $53,045 is reasonable (approximately the 50th percentile of comparable organizations) and documented the basis for this determination concurrently, on [date], by a vote of [__ for / __ against].

Sources: IRS Form 990 e-file data (apps.irs.gov); IRS Business Master File (NTEE classification). Every figure traces to an original public filing — click any organization above to verify it on ProPublica. PeerBasis is a service of Prismind Analytics; its methodology is published, was commissioned for independent adversarial review, and discloses its own limitations. This report is comparability data to support a board's good-faith determination under IRC 4958; it is not legal or tax advice. Generated by PeerBasis on June 9, 2026.