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DuPage County, IL — Gyms Saturation

How many gyms exist per person present — residents plus daytime workers — by ZIP code, compared with the U.S. average. Establishment data: Census ZBP 2023. Population: ACS 2024 5-year. 41 ZIP codes analyzed.

Includes: Gyms & fitness centers · CrossFit boxes · Boxing, martial arts & dance studios · Recreational sports centers. Counted together because official statistics use one 713940 code.

Measured density: Range spans bands — 1.50× the U.S. rate (between 1.50× and 1.64× once withheld ZIP cells are counted)

Why a range: Census does not publish a ZIP-by-industry count when that ZIP has 0–2 businesses. 15 ZIP cells in this county are withheld, 9 of them with residents. Each could hold 0, 1, or 2 businesses: counting them all as 0 gives the low end, counting them all as 2 gives the high end — the data cannot say where the truth sits. The density range uses only the populated cells, since ZIPs without residents are excluded from per-person rates. How ranges work

Range spans the U.S. rate   DuPage County gyms — 150–164% of the U.S. rate

194 gyms are counted in DuPage County — 1.5 per 10,000 people present (residents + daytime workers), 150% of the U.S. rate of 1.0.

On the comparable ZIP set (ZIPs with a published count in every year), the total has risen 25% between 2015 and 2023 (124 → 155). That set is smaller than today's county total. 2020–2021 were pandemic-distorted, and Census rounds counts, so small moves are within noise.

Measured supply density is highest in 60514 (Clarendon Hills), 60527 (Willowbrook), 60172 (Roselle) — well above the national rate. On measured density alone, the lowest-density residential ZIPs with a published count are 60565 (Naperville), 60139 (Glendale Heights), 60188 (Carol Stream).

BLS QCEW puts the latest county-wide count (2026 Q1) at 160 establishments, the freshest available signal.

Measured density: DuPage County sits at 150% of the U.S. rate for gyms. 9 ZIPs with population have no published count (each 0–2 businesses), so the true per-capita rate is between 150% and 164% of the U.S. rate. Why. The highest measured density is in 60514 and 60527; the lowest measured density is in 60565 and 60139.

This is a supply-side read: it counts existing gyms and the people present, not foot traffic, income, rent, or whether locals want more. Treat low density as a question to check, not an answer.

Gyms
194–224
published count; upper bound counts each withheld ZIP cell as 2 (15 cells) (2023)
Per 10,000 present
1.5
residents + daytime workers
U.S. average
1.0
per 10,000 present
County index
1.50×
vs. U.S.
Latest quarter (QCEW)
160
2026 Q1 — county total
Residents
961,096
35 ZIPs with data
Workers
599,180
jobs located in county

Is the area growing?

Population
937,142
Census PEP, July 1 2024
Change since 2020
+0.6%
+5,634 people
Net migration 2024
+4,966
international +11,567, domestic −6,601
Jobs located here
627,316
LODES 2022, −2.0% since 2019

DuPage County had an estimated 937,142 residents on July 1, 2024 — 0.6% more than in 2020 (+5,634). In the latest year it gained 7,962 people: births minus deaths +2,922, international migration +11,567, domestic migration −6,601. Components are published separately and may not sum exactly.

627,316 jobs were located in the county in 2022 (−2.0% since 2019), and 467,437 employed residents lived there (−2.4% since 2019). LODES counts wage and salary jobs covered by unemployment insurance plus federal jobs; it excludes the self-employed and military, and counts jobs rather than unique people. 2019→2022 spans the pandemic, so read it as one change, not a trend.

Population and migration say whether the customer base is growing. They do not say whether people want another business of this type. Definitions and limits →  ·  Full county detail →

ZIP gaining residents
2015–19 → 2020–24
Change
60555 Warrenville
+14.7%
60108 Bloomingdale
+4.9%
ZIP losing residents
2015–19 → 2020–24
Change
60185 West Chicago
−6.6%
60540 Naperville
−6.5%
60139 Glendale Heights
−3.8%

ACS 5-year estimates for 2015–2019 and 2020–2024. Only ZIPs with at least 2,000 residents in both windows and a change larger than the survey margin of error (90%) are listed — small ZIPs move a lot on paper without a real signal.

Nonemployer businesses

Not shown. NES 2024 does not publish fitness and recreational sports centers (NAICS 71394); only the broader recreation group (7139) is available.

Census Nonemployer Statistics 2024 (NAICS 2022). We do not approximate this figure.

Saturation map

Each ZIP area is shaded by its density of this business type per person present (residents + workers) vs. the U.S. average. Click any ZIP to zoom to its boundary, see its numbers, and switch to aerial imagery. Individual mapped shops appear as dots at street level — Show locations zooms you in to them (scroll or double-click to zoom).

Basemap:
Under 50% 50–100% 100–150% 150–250% 250%+ 0–2 (not published) / no data ZIP total (dot size) Mapped shop (OpenStreetMap, street level)

Map data © OpenStreetMap contributors, tiles by OpenFreeMap.

White dots are ZIP totals from the official Census count — the bigger the dot, the more gyms in that ZIP. They are aggregated, not individual shops. Turquoise dots are individual locations mapped in OpenStreetMap, shown only at street level; they are crowd-sourced and indicative, may be incomplete, and do not equal the official counts. Only the official ZIP totals feed the saturation index.

Market trend — up 25% since 2015

Number of gyms in DuPage County across 2015–2023, on a consistent set of ZIP codes present in every year — so changes are real, not ZIP-boundary artifacts. 2015/2018 are pre-pandemic baselines; 2020/2021 are COVID-distorted.

124
2015
150
2018
156
2020
156
2021
159
2022
155
2023

Highest measured density

ZIP
vs. U.S. average
Index
60514 Clarendon Hills
454%
60527 Willowbrook
341%
60172 Roselle
331%
60521 Hinsdale
327%
60563 Naperville
278%
60540 Naperville
227%
60187 Wheaton
212%
60515 Downers Grove
209%
60137 Glen Ellyn
202%
60126 Elmhurst
201%
60559 Westmont
194%
60504 Aurora
173%
60532 Lisle
166%
60516 Downers Grove
163%
60502 Aurora
163%

Lowest measured density

ZIP
vs. U.S. average
Index
60565 Naperville
69%
60139 Glendale Heights
76%
60188 Carol Stream
91%
60185 West Chicago
93%
60517 Woodridge
94%
60101 Addison
110%
60181 Villa Park
113%
60189 Wheaton
120%
60103 Bartlett
123%
60148 Lombard
132%
60502 Aurora
163%
60516 Downers Grove
163%
60532 Lisle
166%
60504 Aurora
173%
60559 Westmont
194%
Low measured density is not evidence of opportunity. A ZIP with few gyms may simply lack foot traffic, retail space, or demand. We rank only residential and mixed ZIPs here; employment hubs and visitor destinations are listed separately below. ZIPs where Census did not publish a count (0–2 businesses) are not ranked: they may be the least served of all, but the data cannot tell 0 from 1 or 2. Verify those locally.

Employment hubs & destinations

These ZIPs have far more workers (or visitors) than residents, so their counts are driven by daytime and visitor demand — not a place to read "shortage" from resident numbers alone.

ZIPNeighborhoodType ResidentsWorkersGymsIndex
60523Oak Brook Employment hub 10,14437,633 4 135%
60143Itasca Employment hub 11,32425,654 0–2 —

Scroll the table sideways to see all columns.

All ZIP codes

Click a column header to sort. Index = gyms per 10,000 people present (residents + 0.5×workers) ÷ the U.S. average. 100% = exactly average.

ZIPNeighborhood ResidentsWorkersGyms Per 10kIndexStatus
60514Clarendon Hills 9,9181,632 5 4.7 454% Very high density
60527Willowbrook 29,02821,833 14 3.5 341% Very high density
60172Roselle 24,14110,525 10 3.4 331% Very high density
60521Hinsdale 18,05611,613 8 3.4 327% Very high density
60563Naperville 39,33040,593 17 2.9 278% Very high density
60540Naperville 42,25227,132 13 2.3 227% High density
60187Wheaton 28,81515,800 8 2.2 212% High density
60515Downers Grove 29,76252,551 12 2.1 209% High density
60137Glen Ellyn 38,6969,454 9 2.1 202% High density
60126Elmhurst 47,51630,767 13 2.1 201% High density
60559Westmont 24,23111,757 6 2.0 194% High density
60504Aurora 39,35822,555 9 1.8 173% High density
60532Lisle 28,54724,870 7 1.7 166% High density
60516Downers Grove 28,0623,589 5 1.7 163% High density
60502Aurora 23,30813,334 5 1.7 163% High density
60523Oak Brook 10,14437,633 4 1.4 135% Above average
60148Lombard 52,59627,553 9 1.4 132% Above average
60103Bartlett 41,38211,955 6 1.3 123% Above average
60189Wheaton 31,0423,097 4 1.2 120% Above average
60181Villa Park 30,34625,300 5 1.2 113% Above average
60101Addison 37,44831,553 6 1.1 110% Above average
60517Woodridge 33,15616,892 4 1.0 94% Below average
60185West Chicago 33,70316,202 4 1.0 93% Below average
60188Carol Stream 42,30722,322 5 0.9 91% Below average
60139Glendale Heights 32,84811,020 3 0.8 76% Below average
60565Naperville 40,4833,254 3 0.7 69% Below average
60106Bensenville 20,04516,758 0–2 — — Not published
60108Bloomingdale 23,60413,062 0–2 — — Not published
60138Glen Ellyn —25 0–2 — — Not published
60143Itasca 11,32425,654 0–2 — — Not published
60157Medinah 2,577398 0–2 — — Not published
60184Wayne 2,557298 0–2 — — Not published
60186West Chicago —1,640 0–2 — — Not published
60190Winfield 11,8267,635 0–2 — — Not published
60191Wood Dale 14,39613,569 0–2 — — Not published
60522Hinsdale —66 0–2 — — Not published
60555Warrenville 15,22312,321 0–2 — — Not published
60561Darien 23,0694,699 0–2 — — Not published
60566Naperville —2,305 0–2 — — Not published
60567Naperville —269 0–2 — — Not published
60598Aurora —19 0–2 — — Not published

Scroll the table sideways to see all columns.

Find an actual space in Downers Grove

The numbers above tell you how the market looks. To find a specific storefront, these marketplaces list available retail space for lease.

LoopNet
Largest commercial marketplace
Browse Downers Grove retail space →
Crexi
Free listings + market data
Browse Downers Grove retail space →
CityFeet
Retail space for lease
Browse Downers Grove retail space →

Open vacancy data (actual empty units) is only published by some cities; where it exists we show it directly. Listings above are third-party.

Census withholds some ZIP-by-industry cells to protect small businesses. 0–2 means the cell was not published (Census publishes industry counts only at 3+ per ZIP), so the ZIP is left unranked rather than counted as zero. ~ means the count is estimated from the broader industry group and can be off by a business or two.

Follow DuPage County and gyms

When a data vintage changes or a section of this report is revised, we post it to a public update feed. No email address, no account, no tracking — and nothing is sent unless something actually changed.

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Methodology & sources

Establishments. U.S. Census ZIP Code Business Patterns (ZBP 2023), NAICS 713940 — fitness & recreational sports centers (gyms). Counts establishments with paid employees. ZBP is published annually with a ~2-year lag.

Fresh county signal. BLS QCEW (quarterly) is newer than ZBP — 2026 Q1 shows 160 establishments county-wide for this industry. It cannot be broken down by ZIP.

Population. U.S. Census American Community Survey 2024 5-year ZCTA population (table B01003). Workers are the ZIP's total employment from the same 2023 ZBP file.

Demand ("people present"). Demand comes from residents and daytime workers: residents + 0.5 × workers. This is the single documented assumption in the model and can be tuned.

Index. index = (ZIP establishments ÷ ZIP demand × 10,000) ÷ the U.S. average for this industry (1.03 per 10,000 present). It is a supply-side density measure; it does not capture income, rent, tourism, or whether locals actually want more.

Read the full methodology →  ·  Data sources & vintages →

BizGapMap — free, no-login small-business saturation reports for major U.S. counties. Built entirely from public U.S. Census, BLS, and IRS data (ZBP 2023, ACS 2024 5-year, PEP 2024, LODES, QCEW, IRS SOI). No forecasts, no revenue guesses — withheld cells are marked, and the few derived counts are labelled as estimates.