Baby Products: what 5.9M reviews show
The highest evidence density of the three categories: 29.0 reviews per product. That makes the category average more stable โ not more causal.
By AMZ Reviews Data ยท October 19, 2026 ยท Data vintage 1996โ2023
What the data shows
Baby Products has 5,930,003 reviews across 204,671 products โ 29.0 reviews per product, the highest evidence density of the three categories here. The review-weighted average is 4.21 (ฯ 1.32); 66.8% of reviews are 5โ and 9.3% are 1โ . Verified-purchase reviews are 90.2%, the lowest of the three, which is worth remembering when comparing category averages: a larger share of unverified reviews can move a category number.
Review volume peaked in 2020 at 810,421 and is 256,467 in the partial 2023 year. As with Office Products, the drop is mostly the September 2023 dataset cutoff, not evidence that shopping behaviour changed.
The early/late rating gap is small and in the opposite direction from Office Products: 4.00 in 2000โ2002 vs 4.10 in 2021โ2023. The early years have tiny samples; the honest reading is “no stable trend”, not “Baby Products improved”.
What it does not tell you
A high reviews-per-product figure makes a category average more stable, but it does not make it causal. Safety-relevant categories are also where review data is weakest: parents who experience a defect may report it to the manufacturer or a regulator instead of writing an Amazon review, and reviews written in the first week cannot speak to durability.
We publish counts and shares, not a safety assessment. For a specific product, the sample behind that product โ not the category average โ is what matters.
Review volume & average rating by year
Counts and averages for this Baby Products sample. Bars are review volume.
| Year | Reviews | Avg rating | Volume |
|---|---|---|---|
| 2000 | 9 | 4.33 | |
| 2001 | 160 | 3.85 | |
| 2002 | 799 | 3.82 | |
| 2003 | 1302 | 3.98 | |
| 2004 | 2689 | 3.84 | |
| 2005 | 4774 | 3.84 | |
| 2006 | 4341 | 3.92 | |
| 2007 | 7312 | 4.11 | |
| 2008 | 10238 | 4.16 | |
| 2009 | 14115 | 4.08 | |
| 2010 | 27571 | 4.06 | |
| 2011 | 57371 | 4.05 | |
| 2012 | 74910 | 4.08 | |
| 2013 | 177593 | 4.22 | |
| 2014 | 273733 | 4.23 | |
| 2015 | 430953 | 4.26 | |
| 2016 | 511919 | 4.28 | |
| 2017 | 519731 | 4.22 | |
| 2018 | 622167 | 4.25 | |
| 2019 | 803848 | 4.35 | |
| 2020 | 810421 | 4.24 | |
| 2021 | 716825 | 4.11 | |
| 2022 | 600755 | 4.06 | |
| 2023 | 256467 | 4.12 |
Rating distribution
How the 5,930,003 reviews break down by star rating.
| Rating | Reviews | Share | Distribution |
|---|---|---|---|
| 1โ | 552197 | 9.31% | |
| 2โ | 307198 | 5.18% | |
| 3โ | 429876 | 7.25% | |
| 4โ | 677546 | 11.43% | |
| 5โ | 3963186 | 66.83% | |
| Total | 5930003 | 100% | ฯ = 1.319 |
Method & limits
These figures are review-weighted aggregates from the UCSD Amazon Reviews 2023 dataset; they are not a survey and not a product ranking. The average rating is computed over reviews, not over products, so a product with thousands of reviews carries more weight than a product with three. The dataset ends in September 2023, which makes the final year incomplete โ read the last bar as a partial year, not as a decline.
Definitions and thresholds are on the methodology page; scope and known limitations are on data sources & limitations.
Sample size. This page is built from 5,930,003 reviews collected between 2000 and 2023. Every figure on this page is a direct count or share of those reviews โ nothing is modelled or inferred.
Data vintage. Source: UCSD Amazon Reviews 2023 (data through September 2023). Historical statistics are not a statement about a product's current quality, availability or price. Review volume is not sales volume.
Scope & deduplication. One review per reviewer per product is counted; ratings without review text still count toward distributions. Coverage is uneven across years and categories, which is why the sample size is shown with every table. See the methodology for the exact definitions.
No raw reviews. We publish aggregated counts and word frequencies only โ never full review text, reviewer identities or images.
Affiliate disclosure. Outbound links to Amazon are Amazon Associates links; if you buy through them we may earn a commission at no extra cost to you. Links point to a product page or to an Amazon search for the brand / store / category. We never display live prices or stock because those change constantly.