ECHOExploratory Compendium of Humanity Online

Pushshift Reddit — 2015 (Annual)

AggregateVery largeRedditEngagementSentimentSocial graph

A Reddit (Pushshift archive, full year 2015) dataset of 248,371,440 comments across 5 months, collected by Jason Baumgartner via Pushshift.io Reddit API archive. Each record contains 91,990 subreddits, 151,939,005 reply edges across all months. Annual aggregate of all Pushshift Reddit comments for 2015 — 248,371,440 comments across 5 months and 91,990 subreddits.. Suitable for longitudinal Reddit analysis, annual growth trends, subreddit evolution, platform-scale engagement research.

Very large: 248.4M records. Working with all of it takes more than a laptop (tens of GB of memory or a disk-based graph database); a sample, or reading the files in a streaming way, is the usual way to start.

#Comment tree#Pushshift#Reply network#Subreddit

Cite this dataset at pushshift-reddit-2015.echo.directory

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Analytics

Data availability: Basic stats only — non-standard dataset format

  • Time-series of aggregate counts rather than individual records

Full text and graph analytics available in individual monthly entries pushshift-reddit-2015-01 through pushshift-reddit-2015-12.

248.4M
Total Comments (2015)
5
Months Covered
92K
Unique Subreddits
151.9M
Reply Edges
Comments per Month (2015)
0551M
0451M
0350.9M
0149.9M
0245.5M
Top Subreddits (2015)
  1. 1AskReddit19.4M
  2. 2leagueoflegends4.8M
  3. 3funny3.7M
  4. 4pics3.1M
  5. 5nfl2.9M
  6. 6nba2.8M
  7. 7videos2.5M
  8. 8todayilearned2.5M
  9. 9worldnews2.5M
  10. 10hockey2.3M
  11. 11AdviceAnimals2.3M
  12. 12pcmasterrace2.3M
  13. 13DestinyTheGame2.1M
  14. 14news2.1M
  15. 15SquaredCircle2M

Record

Catalog key
pushshift-reddit-2015
Authors
Baumgartner, Jason; Zannettou, Savvas; Keegan, Brian; Squire, Megan; Blackburn, Jeremy
Year
2020
Source paper
The Pushshift Reddit Dataset
DOI / arXiv
10.1609/icwsm.v14i1.7347
License
Unknown
Records
248,371,440
Nodes are
user
Edges are
reply
Languages
en
Collected
2015 (2010s)
Region
Global (inferred: the platform is used worldwide)

Provenance

Originally published at
https://files.pushshift.io/reddit/comments/ unverified
Hosted copy
Mirrored on echo.directory on 2026-10-02, 25.5 GB across 5 files. Checksums in MANIFEST.json.

How to cite

BibTeX

@misc{echo2026,
  title  = {ECHO: Exploratory Compendium of Humanity Online},
  author = {Switzer, Braden and Zafarani, Reza},
  year   = {2026},
  url    = {https://echo.directory},
  note   = {Syracuse University}
}

@misc{baumgartner2020pushshift,
  title         = {The Pushshift Reddit Dataset},
  author        = {Baumgartner, Jason and Zannettou, Savvas and Keegan, Brian and Squire, Megan and Blackburn, Jeremy},
  year          = {2020},
  eprint        = {2001.08435},
  archiveprefix = {arXiv}
}

APA

Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory

Baumgartner, J., Zannettou, S., Keegan, B., Squire, M., & Blackburn, J. (2020). Pushshift Reddit — 2015 (Annual) [Data set]. https://doi.org/10.1609/icwsm.v14i1.7347

MLA

Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.

Baumgartner, Jason, et al. Pushshift Reddit — 2015 (Annual). 2020, doi.org/10.1609/icwsm.v14i1.7347.

BibTeX · RIS · CSL-JSON

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