New York Got Louder in 2020. It Hasn't Quieted Down.

There's a running joke about New York being the loudest city in America. New Yorkers complain about the noise constantly — and, helpfully, they call 311 to do it. That gave me an excuse to pull every noise-related 311 complaint the city has recorded since 2010 and see what 4.8 million calls actually look like.

The short version: the pandemic broke the baseline, and the city hasn't gotten quiet again.

The Data

I pulled the data through the Socrata API against the NYC 311 Service Requests endpoint, filtering on the noise complaint types (Noise — Residential, Noise — Street/Sidewalk, Noise — Commercial, Noise — Vehicle, etc.) — about 4.8 million rows from 2010 through October 2021.

The full 311 dataset is ~27 million rows since 2010, so noise is about 18% of everything New Yorkers call the city about. That alone is interesting. The Socrata API made the pull tractable — no need to download 25GB of CSV.

The Pandemic Rebase

Here's noise complaints by month, year over year — bold line is residential noise, grey lines are other 311 categories like Heat/Hot Water and Street Condition for comparison.

For most of the decade, monthly noise complaints sat between 15,000 and 30,000. There's a mild summer bump every year (warmer weather → windows open → louder streets), but the shape is steady.

Then 2020 happens. The line goes from ~25K in February to ~70K in June and stays there through August. Volume more than doubles versus any prior year, and the shape of the curve changes — it doesn't taper off in fall the way it usually does.

The story doesn't end with the pandemic, though. 2021 stays elevated. Even by late summer, the city is running 50-60K complaints per month — roughly double the pre-2020 baseline, with no sign of returning to 2010s normal.

If you compare to the other 311 categories (the grey lines), noise was middle of the pack historically — Heat/Hot Water complaints used to dominate. In 2020, noise overtook everything.

Where the Calls Come From

ZIP-level choropleth of total noise complaints, 2010-2021:

Five ZIP codes account for a disproportionate share:

The top spot — 10466 in the Bronx — has more noise complaints than the next two ZIPs combined. Most of the action concentrates in upper Manhattan and a couple of Bronx and Brooklyn ZIPs. Downtown Manhattan, Staten Island, and most of Queens stay relatively quiet on the 311 record.

That doesn't mean those areas are objectively quieter — only that fewer people there are calling 311. The two questions aren't the same. Reporting behavior matters too: how willing residents are to call the city, whether they expect anything to come of it, whether they have time on a weekend night.

When the Calls Come In

If 2020 broke the baseline, what time of week did the breaking happen? Day-of-week noise volume in August, year by year:

Every year has the same shape — quiet Monday through Thursday, slow climb Friday, peak Saturday, taper Sunday. In a normal year, the Saturday peak is around 5,000-7,000 complaints for the month.

In August 2020, Saturdays hit ~20,000 — roughly 4× the prior decade's Saturday volume. The weekday baseline barely changed; the whole spike was concentrated on Friday and Saturday nights.

2021 cooled off relative to 2020, but Saturdays still ran ~12,000 — still double the pre-pandemic norm. Whatever happened in the summer of 2020 reshaped how loud New York gets on a Saturday night, and the pattern is sticky.

So Is New York Noisy?

By 311's definition, yeah — and more so than it used to be. The pre-pandemic numbers were already among the highest of any 311 category. 2020 didn't add a temporary surge; it shifted the floor.

Whether that reflects more actual noise or more people willing to call about it, I can't tell from this dataset alone. Probably some of both. More people working from home meant more ears for late-night activity. More outdoor bar service and street life in 2020 meant the activity itself shifted. And once a behavior — calling 311 about your neighbors at 1am — becomes normalized, it tends to stay.

Tools and Methodology

• Data: NYC 311 Service Requests, pulled via Socrata API. Filtered on the Noise* complaint types. 4,802,218 rows pulled, 4,789,704 after dropping rows with missing ZIP or borough.
• Spatial join: ZIP shapefile from NYC Open Data, merged on the cleaned complaint count.
• Tools: Python, pandas, NumPy, GeoPandas, fiona, matplotlib, seaborn, plotly.express. BeautifulSoup for some scraping. urllib for the API calls.
• Limit query: The Socrata API caps at 50K rows per call by default, so I bumped $limit to 300M and let it paginate.

Originally published October 26, 2021 as part of Introduction to Urban Data and Informatics, Columbia GSAPP (Professor Boyeong Hong). Notebook and source plots on GitHub. Earlier version on Medium.