Reykjavíkurborg (Reykjavík Municipality)

Open data from Reykjavík City via two APIs:

1. CKAN API at gagnagatt.reykjavik.is - downloadable CSV files
2. PX-Web API at velstat.reykjavik.is - welfare statistics (requires POST queries)

Data Scope

589 CKAN datasets + 293 PX-Web tables covering municipal operations, social services, demographics, and infrastructure.

Full catalog: data/reykjavik_catalog.md — browse this first to find the right dataset before querying APIs.

• Financial: Annual accounts by department and fund (Ársuppgjör)
• Education: School enrollment, music schools, after-school programs
• Welfare: Home support services, elderly care, disability services
• Infrastructure: Water quality, waste management, energy consumption
• Demographics: Population by district, housing, families
• Civic: Election data, website analytics, service usage

APIs

CKAN API (gagnagatt.reykjavik.is)

Base URL: https://gagnagatt.reykjavik.is/api/3/action/

No authentication required. Returns CSV files directly.

PX-Web API (velstat.reykjavik.is)

Base URL: https://velstat.reykjavik.is/PxWeb/api/v1/is/VELSTAT/

No authentication required. Returns JSON metadata (GET) or CSV data (POST).

Categories:

Path	Description
000. Lykiltölur/	Key statistics
100. Manadarleg tolfraedi/	Monthly statistics
200. Arsskyrsla/	Annual reports

Subcategories (e.g., in 200. Arsskyrsla/):

• 02 Fjarhagsadstod/ - Financial assistance
• 07 Barnavernd Reykjavikur/ - Child protection
• 10. Heimilisofbeldi/ - Domestic violence
• 11 Mannfjoldi/ - Population

Fetch all data from a table:

curl -X POST "https://velstat.reykjavik.is/PxWeb/api/v1/is/VELSTAT/200.%20Arsskyrsla/11%20Mannfjoldi/VEL11008.px" \
  -H "Content-Type: application/json" \
  -d '{"query": [], "response": {"format": "csv"}}' \
  -o output.csv

# Convert encoding (output is Windows-1252)
iconv -f WINDOWS-1252 -t UTF-8 output.csv > output_utf8.csv

Fetching Data (CKAN)

List all datasets

curl -s "https://gagnagatt.reykjavik.is/api/3/action/package_list" | jq '.result[:10]'

Search datasets

# Search by keyword
curl -s "https://gagnagatt.reykjavik.is/api/3/action/package_search?q=mannfjoldi&rows=5" | jq

# Filter by organization
curl -s "https://gagnagatt.reykjavik.is/api/3/action/package_search?fq=organization:velferdarsvid&rows=10" | jq

# Filter by group (category)
curl -s "https://gagnagatt.reykjavik.is/api/3/action/package_search?fq=groups:ibuar&rows=10" | jq

Get dataset details

curl -s "https://gagnagatt.reykjavik.is/api/3/action/package_show?id=arsuppgjor-a-hluta-reykjavikurborgar" | jq

Download CSV resource

# Get resource URL from package_show, then download
curl -s "https://gagnagatt.reykjavik.is/api/3/action/package_show?id=arsuppgjor-a-hluta-reykjavikurborgar" | \
  jq -r '.result.resources[0].url' | \
  xargs curl -o data/raw/reykjavik/arsuppgjor.csv

Organizations (Departments)

ID	Name	Description
thjonustu-og-nyskopunarsvid	Þjónustu- og nýsköpunarsviðið	Service & Innovation (111 datasets)
velferdarsvid	Velferðarsviðið	Welfare Services (85 datasets)
skola-og-fristundasvid	Skóla- og frístundasviðið	Education & Recreation (44 datasets)
umhverfis-og-skipulagssvid	Umhverfis- og skipulagssviðið	Environment & Planning
fjarmala-og-ahettusjornunarsvid	Fjármála- og áhættustjórnarsviðið	Finance & Risk Management
menningar-og-ithrottasvid	Menningar- og íþróttasviðið	Culture & Sports
mannauds-og-starfsumhverfissvid	Mannauðs- og starfsumhverfissviðið	HR & Work Environment

Groups (Categories)

ID	Name
ibuar	Íbúar (Residents)
lydheilsa_oryggi_lydraedi	Lýðheilsa, öryggi, lýðræði
velferdarmal	Velferðarmál (Welfare)
skolar-menntun-fraedsla	Skólar, menntun, fræðsla
fjolskyldan	Fjölskyldan (Family)
husnaedismarkadur_og_skipulagsmal	Húsnæðismarkaður og skipulagsmál
umhverfi_og_audlindir	Umhverfi og auðlindir
samgongur	Samgöngur (Transport)
menning_ferdamal_og_tomstundir	Menning, ferðamál, tómstundir
vinnumarkadur	Vinnumarkaður (Labor market)
starfsemi_reykjavikurborgar	Starfsemi Reykjavíkurborgar

Key Datasets

Financial — Opin Fjármál (Annual Accounts with Vendor Detail)

Use this for: "What does Reykjavík spend on X?", "Who are Reykjavík's biggest vendors?", "How much does Reykjavík pay Strætó/SORPA/etc?"

Dataset: arsuppgjor on gagnagatt — CSV files per year, semicolon-delimited, 2014–2025.

Coverage: A-part only (tax-funded). Three funds: Reykjavíkurborg (Aðalsjóður), Eignasjóður fasteignastofa, Bílastæðasjóður. B-part entities (OR, Strætó, Félagsbústaðir, SORPA, etc.) are not included as buyers — but they appear as vendors when the A-part pays them.

Download URLs (latest years):

# 2024 full year (~94k rows)
curl -sL 'https://gagnagatt.reykjavik.is/dataset/75521327-9d99-47d1-b1fd-a273057cbb4b/resource/54bb63af-1037-47e9-9a00-165b758f09a9/download/uppg202412_island.csv' \
  -o data/raw/reykjavik_accounts/uppg202412.csv

# 2025 Q1-Q3
curl -sL 'https://gagnagatt.reykjavik.is/dataset/75521327-9d99-47d1-b1fd-a273057cbb4b/resource/ccc2422a-63c1-4145-8579-7f4e383afbc6/download/uppg202509_island.csv' \
  -o data/raw/reykjavik_accounts/uppg202509.csv

# For other years, use CKAN API:
curl -s 'https://gagnagatt.reykjavik.is/api/3/action/package_show?id=arsuppgjor' | jq '.result.resources[] | {name, url}'

CSV Schema (semicolon-delimited, UTF-8):

Column	Description	Example
uttak	Extract ID	UPPG202412
fyrirtaeki	Fund name	Reykjavíkurborg, Eignasjóður fasteignastofa
samtala1	Division (svið)	Skóla- og frístundasvið
samtala2	Department	Grunnskólar
samtala3	Sub-department	Grunnskólar
samtala4	Category	(often empty)
samtala0	Unit/school/office	Grandaskóli
tegund1	Expense type L1	Rekstrargjöld
tegund2	Expense type L2	Skrifstofu- og stjórnunarkostnaður
tegund3	Expense type L3	Fjarskiptakostnaður
tegund4	Expense type L4	(often empty)
tegund0	Expense type detail	Fjarskipti
vm_numer	Vendor ID (internal)	60829
vm_nafn	Vendor name	Sýn hf.
ar	Year	2024
arsfjordungur	Quarter (1-4)	3
raun	Amount ISK	8262 (positive=expense, negative=revenue)

Key divisions (samtala1) in 2024:

• Skóla- og frístundasvið — 80 bn (schools, kindergartens, recreation)
• Velferðarsvið — 46 bn (welfare services)
• Menningar- og íþróttasvið — 20 bn (culture, sports)
• Umhverfis- og skipulagssvið — 12 bn (environment, planning)
• Framlög til B-hluta — 5.5 bn (transfers to subsidiaries)

Top external vendors (2024): Strætó (5.6 bn), SORPA (2 bn), Veitur/OR (1.5 bn), Slökkvilið (1.5 bn), Skólamatur (817 m).

Note: Salary rows have empty vm_numer/vm_nafn (personal data excluded). Internal transfers (Reykjavíkurborg ↔ Eignasjóður) are the largest "vendor" entries.

DuckDB queries:

-- Top vendors for a division
SELECT vm_nafn, sum(raun) as total
FROM read_csv('data/raw/reykjavik_accounts/uppg202412.csv', delim=';', header=true)
WHERE samtala1 = 'Velferðarsvið' AND raun > 0 AND vm_nafn IS NOT NULL AND vm_nafn != ''
GROUP BY 1 ORDER BY 2 DESC LIMIT 20

-- Spending by division over time (load multiple years)
SELECT ar, samtala1, sum(raun) as total
FROM read_csv('data/raw/reykjavik_accounts/uppg*.csv', delim=';', header=true, union_by_name=true)
WHERE raun > 0
GROUP BY 1, 2 ORDER BY 1, 3 DESC

-- All payments to a specific vendor
SELECT ar, arsfjordungur, samtala1, samtala0, tegund1, tegund2, raun
FROM read_csv('data/raw/reykjavik_accounts/uppg202412.csv', delim=';', header=true)
WHERE vm_nafn ILIKE '%strætó%'
ORDER BY raun DESC

Dataset ID	Description
arsuppgjor	Annual accounts A-part with vendor detail (2014-2025)
arsuppgjor-b-hluta-reykjavikurborgar	Annual accounts section B (enterprises, no vendor detail)

Population & Demographics

Dataset ID	Description	Verified
mannfjoldi_i_reykjavik_eftir_aldursbilum	Population by age group (1998-2018)	✓
mannfjoldi_i_reykjavik_eftir_hverfum_og_kyni	Population by district and gender
mannfjoldi_og_ibudir_i_reykjavik	Population and housing
midborgin-okkar	Central district housing and population
fjoldi-ibua-eftir-hverfi-og-aldri	Population by district and age

Education

Dataset ID	Description
nemendur-i-tonlistarskola-*	Music school enrollment
nemendafjoldi-i-fristundaheidmilum	After-school program enrollment
grunnskolanemendur-*	Primary school students

Welfare Services

Dataset ID	Description
heimastudningur-*	Home support services
fjoldi-*-fatlads-folks	Disability services
felags-og-fjolskylduthjonusta-*	Social and family services

Infrastructure

Dataset ID	Description
neysluvatn-veitufra-rvk-efnamaelingar	Drinking water quality
efnamaelingar-a-strondumog-i-sjorum	Coastal water quality
rafmagn-og-heitavatn-og-kalt-vatn	Energy and water consumption
sorphirda-*	Waste collection statistics

Elections

Dataset ID	Description
sveitarstjornarkosningar-*	Municipal election results (1986-present)
kjorsokn-*	Voter turnout data

Nationality/Citizenship (ríkisfang)

CKAN datasets:

Dataset ID	Description
erlendir_rikisborgarar_i_reykjavik_eftir_rikisfangi_med_ar_rikisfang_og_kyni_i_stafrofsrod	Foreign citizens by country, year, gender (1998-present)
erlendir_rikisborgarar_i_reykjavik_eftir_hverfum	Foreign citizens by district
erlendir_rikisborgarar_i_reykjavik_eftir_heimsalfum	Foreign citizens by continent
atvinnuleysi_i_reykjavik_eftir_manudum_rikisfangi_og_kyni	Unemployment by nationality and gender
algengustu_thjoderni_barna_af_erlendum_uppruna_i_leikskolum_borgarinnar	Most common nationalities in kindergartens
algengustu_thjoderni_nemenda_i_grunnskolum_sem_fengu_kennslu_i_islensku_sem_odru_tungumali	Nationalities of students learning Icelandic as 2nd language
fjoldi_barna_af_erlendum_uppruna_i_leikskolum_reykjavikur_eftir_thjonustumidstodvum	Foreign-origin children in kindergartens by district
thjoderni_og_fjoldi_farthega_skemmtiferdaskipa_sem_fara_um_hafnir_faxafloahafna	Cruise passenger nationalities

PX-Web tables (velstat.reykjavik.is):

Table	Path	Description
VEL11008.px	200. Arsskyrsla/11 Mannfjoldi/	Population by district and nationality (2010-2022)
VEL11006.px	200. Arsskyrsla/11 Mannfjoldi/	Population by service center, age, nationality
VEL02009.px	200. Arsskyrsla/02 Fjarhagsadstod/	Financial assistance recipients by nationality
VST10006.px	100. Manadarleg tolfraedi/10. Heimilisofbeldi/	Domestic violence reports by nationality

Response Structure

{
  "success": true,
  "result": {
    "id": "6e0aca8d-4690-4209-a0e9-a87ebd2c412b",
    "name": "arsuppgjor-a-hluta-reykjavikurborgar",
    "title": "Ársuppgjör A-hluta Reykjávíkurborgar",
    "notes": "Dataset description...",
    "resources": [
      {
        "id": "60ab64ee-866a-4cd0-9b08-0d6ecda1b254",
        "name": "uppg202509_island.csv",
        "format": "CSV",
        "url": "https://gagnagatt.reykjavik.is/dataset/.../download/uppg202509_island.csv"
      }
    ],
    "organization": {...},
    "tags": [...]
  }
}

CSV Format

Reykjavík CSVs use Icelandic locale formatting:

Setting	Value
Delimiter	; (semicolon)
Decimal	, (comma)
Encoding	UTF-8

DuckDB

SELECT *
FROM read_csv('data/raw/reykjavik/file.csv',
  delim=';',
  decimal_separator=','
)

Python (polars)

import polars as pl
df = pl.read_csv('data/raw/reykjavik/file.csv',
  separator=';',
  decimal_comma=True
)

miller

mlr --icsv --ifs ';' --ocsv cat data/raw/reykjavik/file.csv

Data Caveats

1. Icelandic CSV format: Semicolon delimiter, comma decimal separator (see CSV Format above).

2. Naming conventions: Dataset IDs use Icelandic with hyphens or underscores. Years often appear at end (e.g., 2011-2022).

3. Multiple resources: Datasets often contain multiple CSV files for different time periods. Check resources array for all files.

4. License: Most datasets use "other-open" license allowing reuse.

5. Time series: Historical data is often split across multiple dataset IDs by year range.

6. Updates: Datasets are updated at varying frequencies. Check metadata_modified for last update.

Icelandic Terms

Common Column Headers

Icelandic	English
Ár	Year
Aldur	Age
Kyn	Gender
Fjöldi	Count/number
Hlutfall	Share/proportion
Heild / Alls	Total

Domain Terms

Icelandic	English
Ársuppgjör	Annual accounts
Íbúar	Residents
Hverfi	District/neighborhood
Þjónusta	Service
Velferð	Welfare
Skólar	Schools
Fjölskylda	Family
Heimastudningur	Home support
Sorphirða	Waste collection
Neysluvatn	Drinking water
Kosningar	Elections
Mannfjöldi	Population
Ríkisfang	Citizenship/nationality
Erlendur/Erlendir	Foreign
Íslenskur/Íslenskt	Icelandic
Þjóðerni	Nationality/ethnicity
Uppruni	Origin
Atvinnuleysi	Unemployment
Fjárhagsaðstoð	Financial assistance
Heimilisofbeldi	Domestic violence
Gerandi	Perpetrator
Þolandi	Victim
Þjónustumiðstöð	Service center

Example queries (DuckDB)

Population time series from raw data:

SELECT
  Ár as year,
  Fjöldi as population
FROM read_csv('../data/raw/reykjavik/mannfjoldi_aldursbil.csv',
  delim=';',
  decimal_separator=','
)
WHERE Aldur = 'Alls'
ORDER BY year

-- Example: From processed data (standard CSV format)
SELECT *
FROM read_csv('../data/processed/reykjavik_population.csv')
ORDER BY year