The Classic - Cycle Oregon

5 takeaways from the PPB’s latest ‘Bike Theft Trend Report’

Posted by on December 16th, 2014 at 3:29 pm

Stolen bikes at drug bust in Old Town-14

Over $2 million worth every year.
(Photo: J. Maus/BikePortland)

When it comes to the battle against bike theft, data plays a huge role. Online registration and listing services rely on data to aid in your bike’s recovery, the police use data to determine whether a bike is stolen or not, the public can use data to measure progress (or failure) over time, politicians often use data to determine whether or not a specific issue is worthy of their attention, and so on.

The latest numbers released by the Portland Police Bureau (PPB) are definitely worthy of attention. They show that bike theft is costing Portlanders well over $2 million a year and that at least 8 bicycles are stolen in our city every single day.

Just before the recent Bike Theft Summit, the PPB released their latest report (based on statistics from the Police Bureau Data System (PPDS)). Before sharing an analysis, keep in mind that improving the accuracy and availability of these stats is part of our larger effort on bike theft. I also want you to be aware of the following caveats:

  • I’ve noticed a few inconsistencies and I’m still working to clarify a few numbers with the PPB.
  • The 2014 numbers only go through October 31st, so I’ve made conservative estimates to arrive at annual numbers based on the past three full years of data.
  • The PPB estimates cases of bike theft are under-reported by about 15-30%.
  • These stats do not include bikes taken from residences/garages during burglaries (I’m not yet sure why). As many of you know, this is a huge chunk of the problem and we’ll be working on including these cases in a future report.

Even with those caveats, I think we have enough numbers to help us get a clearer picture of the problem. Here are my takeaways:

Bike theft has grown significantly since 2008

The chart below shows the number of reported cases from 2011 through October 2014 (I’ve estimated the total 2014 amount):

Going back further, I’ll use numbers reported by Sarah Mirk in her excellent 2010 article in The Portland Mercury. Mirk reported that there were 2,300 total reported cases in the 21 months between May 2008 and February 2010. That’s an average of 110 bikes reported stolen each month. In their most recent report, the PPB says there were 7,678 bikes reported stolen in the 34 months from January 2012 through October of 2014. That’s an average of 226 stolen bikes per month — a whopping 105% increase.

Based on my own estimates I think it’s possible that by the end of this year we’ll go over 3,000 reported bike thefts for the first time. That’s an average of about 8 bikes every day of the year.


Are thieves developing a finer taste for bikes?

Estimated value of stolen bikes and number of reports.
(Source: PPB)

About half the stolen bikes in the PPDS are given an estimated value. In all of the past four years, bikes with a value of about $500 have accounted for the most thefts. One interesting trend in the numbers is that the average estimated value of a stolen bike has more than doubled since 2011 — from $320 to an estimated $732 in 2014. This could mean that thieves are getting more selective.

Also eye-catching in the latest report is the number of high-end bikes being stolen. Over 16% of them had an estimated value of over $1,000.

The number of bike thefts is close to the number of auto thefts

According to the PPB’s latest bike theft report, from January 2012 through October of this year there have been 7,678 reported bike thefts. One of my goals is to get better data to compare these numbers directly to other, similar crimes. For instance, the PPB’s online CrimeStats tool tells us there were 8,956 cases of “vehicle theft” in the same period. That number includes cars/trucks and motorcycles, which leads me to assume the number of cars stolen in Portland is similar to the number of bikes. We need more data to get a clearer picture of this comparison (I’m also curious about total estimated value of cars stolen versus bikes stolen).

Portland’s $2 million a year (and growing) problem

Using these estimated values, the PPB says the total value of property loss due to bike thefts is over $2 million per year. According to my estimates, that number spiked from just around $1 million in 2012. The huge increase is from a combination of more — and more valuable — bikes being stolen.

Put another way, in the 34 months between January 2012 and October of this year, Portlanders lost an estimated $5,435,750 in stolen bikes. That’s about $160,000 per month.

Downtown/northwest is where the action is

Over 25% of all reported bike thefts from January 2012 through October of this year happened in the five neighborhoods we typically think of collectively as “downtown.” The Pearl District, Downtown, Old Town/China Town, Northwest, and Goose Hollow accounted for 1,931 of the 7,678 bike thefts in that period. Downtown led the way with 780 thefts while Northwest and the Pearl District had 422 and 411 respectively.

Getting more police resources dedicated to this problem is one of our top priorities. When that happens, we know exactly where we’d like them to focus.


These stats are a good start; but we need to make them even cleaner and more complete in order to really grasp the state of bike theft in Portland. Hopefully someday all the local datasets — Bike Index (which is the same as ours), Project 529, and the PPB’s reports, will all be integrated into one.

Stay tuned to our coverage as we continue to raise the profile of this issue and take more steps forward.

— Download the PPB’s Bicycle Theft Trend Report 2014 here (PDF).

Portland Century August 19th

NOTE: We love your comments and work hard to ensure they are productive, considerate, and welcoming of all perspectives. Disagreements are encouraged, but only if done with tact and respect. If you see a mean or inappropriate comment, please contact us and we'll take a look at it right away. Also, if you comment frequently, please consider holding your thoughts so that others can step forward. Thank you — Jonathan

  • bryan hance
    bryan hance December 16, 2014 at 3:38 pm

    FWIW a researcher heatmapped PDX’s bike theft hotspots using our data, along with several other cities, here:

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  • V$ December 16, 2014 at 3:47 pm

    Percentages are your friends…are more expensive bikes being stolen because there are more of them in total? Absolute values sow false conclusions.

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  • Todd Boulanger December 16, 2014 at 4:37 pm

    The rising value of reported bikes stolen…may also be influenced by:
    1) the role of thumb “base” cost of a good commuting bike back then was $350ish and now its $500ish due to China costs going up and commuter bike quality/ accessories improving…and the last of the undervalued 1980s bikes have been flipped; and
    2) PPB (and owners) may be getting better at valuing the value of the stolen property; and
    3) More of us are riding better bikes and fully equipped bikes (dynamo +).

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  • Todd Boulanger December 16, 2014 at 4:44 pm

    …and while bike thefts increase in Portland…car thefts decrease in Vancouver. Any linkage?

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  • Gerald Fittipaldi December 16, 2014 at 6:13 pm

    I find it hard to believe that there are more car thefts per year than bike thefts. I can count on one hand the number of times I’ve heard of a friend or acquaintance having their car stolen.

    Is it possible that the “vehicle theft” category refers to incidences of items being stolen out of a vehicle, as in car break-ins?

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  • Joseph E December 16, 2014 at 6:16 pm

    Car thefts are more likely to be reported to the police than are bike thefts. I suspect there are 2, 3 or 4 times as many bike thefts as car thefts in Portland.

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  • Alan 1.0 December 16, 2014 at 7:45 pm

    The PPB estimates cases of bike theft are under-reported by about 15-30%.

    That surprises me. Just based on gut feel, and a few related anecdotes, I would have put reporting at less than 50%, and especially when they take out home burglaries, which I would think are more reported than on-the-road/staple/parking type klepts. I wonder how they build their denominator and/or the unreported fraction?

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  • spencer December 16, 2014 at 8:40 pm

    and what should be done with chop shops? continue to let them them operated in our parks and public spaces?

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    • spencer December 16, 2014 at 8:40 pm


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  • John Liu
    John Liu December 17, 2014 at 12:27 am

    It should be illegal to possess large quantities of bikes or parts on public property or while trespassing on private property, unless as part of an organized swap meet or group ride. Such a law would allow police to simply impound the inventory of every chop shop under the freeway, on the Springwater, etc. Good luck proving which of the nearby people is the culprit, but confiscate a “business'” inventory frequently enough and it will eventually move or cease operations.

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    • meh December 17, 2014 at 7:02 am

      Why a new law, trespassing is alread on the books.

      It’s like the using a cell phone while driving law, too specific to a single device, and we already had distracted driving on the books.

      Cluttering up the statutes doesn’t help, just enforce the laws we already have.

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    • Todd Hudson December 17, 2014 at 8:13 am

      Or we could enforce the camping ban, as all of these chop shops are run out of homeless camps on public land.

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      • John Liu
        John Liu December 17, 2014 at 10:11 am

        Shutting down homeless camps is difficult, or this city (and others) would have managed to do it already.

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      • Alan 1.0 December 17, 2014 at 8:54 pm

        all except Old Town, or Hillsboro, or 11th & Pine, or the infamous Pirate Ship, …

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      • Alan 1.0 December 18, 2014 at 9:16 am

        Well, “all of these” except ones like in Old Town (top photo), Hillsboro, 11th & Oak, the notorious pirate ship (all of which I’ve read about on BP), and then all the unidentified ones which are better hidden in garages or basements or underused commercial space. I wonder, if we could identify the top 100 most prolific bike thieves, how would their living situations stack up? How many are living on public or vacant land? How many couch surf? Other hidey holes? Some sort of permanent address? The set of people who are “bike thieves” certainly overlaps with the set who are “homeless” but I guess that it has much higher overlap with the set of “drug addicts.”

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  • Dave December 17, 2014 at 7:23 am

    The Boregonian has been running a series on Oregon’s deficiencies in drug treatment–any link between property crime and the lack of help in getting addicts clean?

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    • meh December 17, 2014 at 12:40 pm

      Or the generosity in social programs in Portland that draws more homeless people to the city who already have addiction issues.

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      • lyle w. December 18, 2014 at 12:52 pm

        Hand in Hand with the way rural/conservative areas of the country are continually making it harder and harder (and illegal) to be homeless in their towns– so in essence squeezing the middle of the country (and their homeless) out into the corners.

        You know, because they’re all about being responsible for their own problems and not just dropping them off on someone else’s doorstep to take care of.

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  • Zaphod December 17, 2014 at 9:44 am

    As a tiny data point, my kid had his properly U-locked bike stolen twice and I didn’t report it because insurance deductible > value of bike. I guess I didn’t even fathom the possibility of recovery… never crossed my mind.

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    • Gary December 17, 2014 at 11:51 am

      Reporting it takes ~5 minutes on the PPD website. Well worth it just for the contribution to more accurate data (which may help future enforcement), never mind the chance it’ll get recovered. If you had to call the police and wait for an officer to come take a report it’d be one thing, but it’s so easy.

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  • Zaphod December 17, 2014 at 9:47 am

    The most valuable data from any bike theft research is the where, when, what type and by what means were bikes stolen. Those things would be actionable by lock choice, bike choice, location choice to reduce the likelihood of losing your ride.

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  • geezer December 17, 2014 at 10:18 am

    Wow, that’s a lot of job interviews!

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  • Aaron W. December 17, 2014 at 10:54 am

    These aren’t all bikes stolen these are bikes reported stolen. The data might skew towards higher priced bikes simply because people who can afford those higher priced bikes are:

    1) more likely to report the bike stolen to police
    2) more likely to record the serial number

    Similarly, a “spike” in bikes stolen is different than a spike in reported bikes stolen. More awareness/coverage in places like could be causing the increase in reports.

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